1
Data sheet acquired from Harris Semiconductor
SCHS248A
Features
’AC257, ’ACT257. . . . . . . . . . . . . Non-Inverting Outputs
CD74ACT258 . . . . . . . . . . . . . . . . . . . Inverting Outputs
Buffered Inputs
Typical Propagation Delay
- 4.4ns at VCC = 5V, TA = 25oC, CL = 50pF
Exceeds 2kV ESD Protection MIL-STD-883, Method
3015
SCR-Latchup-Resistant CMOS Process and Circuit
Design
Speed of Bipolar FAST™/AS/S with Significantly
Reduced Power Consumption
Balanced Propagation Delays
AC Types Feature 1.5V to 5.5V Operation and
Balanced Noise Immunity at 30% of the Supply
±24mA Output Drive Current
- Fanout to 15 FAST™ ICs
Drives 50 Transmission Lines
Pinout
CD54AC257, CD54ACT257
(CERDIP)
CD74AC257, CD74ACT257, CD74ACT258
(PDIP, SOIC)
TOP VIEW
Description
The ’AC257, ’ACT257 and CD74ACT258 are quad 2-input
multiplexers with three-state outputs that utilize Advanced
CMOS Logic technology. Each of these devices selects four
bits of data from two sources under the control of a common
Select input (S). The Output Enable (OE) is active LOW.
When OE is HIGH, all of the outputs (Y or Y) are in the high-
impedance state regardless of all other input conditions.
Moving data from two groups of registers to four common
output buses is a common use of the ’AC257, ’ACT257, and
CD74ACT258. The state of the Select input determines the
particular register from which the data comes. The ’AC257,
’ACT257 and CD74ACT258 can also be used as function
generators.
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
S
1I0
1I1
1Y
2I0
2I1
GND
2Y
VCC
4I0
4I1
4Y
3I0
3I1
3Y
OE
AC/ACT257ACT258 ACT258AC/ACT257 VCC
4I0
4I1
4Y
3I0
3I1
3Y
OE
S
1I0
1I1
1Y
2I0
2I1
GND
2Y
Ordering Information
PART
NUMBER TEMP.
RANGE (oC) PACKAGE
CD54AC257F3A -55 to 125 16 Ld CERDIP
CD74AC257E 0 to 70oC, -40 to 85,
-55 to 125 16 Ld PDIP
CD74AC257M 0 to 70oC, -40 to 85,
-55 to 125 16 Ld SOIC
CD54ACT257F3A -55 to 125 16 Ld CERDIP
CD74ACT257E 0 to 70oC, -40 to 85,
-55 to 125 16 Ld PDIP
CD74ACT257M 0 to 70oC, -40 to 85,
-55 to 125 16 Ld SOIC
CD74ACT258E 0 to 70oC, -40 to 85,
-55 to 125 16 Ld PDIP
CD74ACT258M 0 to 70oC, -40 to 85,
-55 to 125 16 Ld SOIC
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die for this part number is available which meets all
electrical specifications. Please contact your local TI sales office or
customer service for ordering information.
August 1998 - Revised May 2000
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a Trademark of Fairchild Semiconductor.
Copyright © 2000, Texas Instruments Incorporated
CD54/74AC257, CD54/74A CT257,
CD74ACT258
Quad 2-Input Multiplexer
with Three-State Outputs
2
Functional Diagram
TRUTH TABLE
OUTPUT
ENABLE SELECT
INPUT DATA INPUTS 257
OUTPUTS 258
OUTPUTS
OE S I0I1Y Y
HXXXZZ
LLLXLH
LLHXHL
LHXLLH
LHXHHL
H = High level voltage, L = Low level voltage, Z = High impedance (off) state, X = Don’t Care
2
5
11
14
6
13
10
3
4
7
12
9
4Y
3Y
2Y
1Y 1Y
4Y
3Y
2Y
AC/ACT
257 AC/ACT
258
1I0
2I0
3I0
4I0
1I1
2I1
3I1
4I1
S
OE
115
CD54/74AC257, CD54/74ACT257, CD74ACT258
3
Absolute Maximum Ratings Thermal Information
DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6V
DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, IOK
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mA
DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mA
DC VCC or Ground Current, ICC or IGND (Note 3) . . . . . . . . .±100mA
Operating Conditions
Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
Supply Voltage Range, VCC (Note 4)
AC Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V
ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC
Input Rise and Fall Slew Rate, dt/dv
AC Types, 1.5V to 3V . . . . . . . . . . . . . . . . . . . . . . . . . 50ns (Max)
AC Types, 3.6V to 5.5V. . . . . . . . . . . . . . . . . . . . . . . . 20ns (Max)
ACT Types, 4.5V to 5.5V. . . . . . . . . . . . . . . . . . . . . . . 10ns (Max)
Thermal Resistance (Typical, Note 5) θJA (oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___
SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . . 300oC
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
3. For up to 4 outputs per device, add ±25mA for each additional output.
4. Unless otherwise specified, all voltages are referenced to ground.
5. θJA is measured with the component mounted on an evaluation PC board in free air.
DC Electrical Specifications
PARAMETER SYMBOL
TEST
CONDITIONS VCC
(V)
25oC-40oC TO
85oC-55oC TO
125oC
UNITSVI(V) IO(mA) MIN MAX MIN MAX MIN MAX
AC TYPES
High Level Input Voltage VIH - - 1.5 1.2 - 1.2 - 1.2 - V
3 2.1 - 2.1 - 2.1 - V
5.5 3.85 - 3.85 - 3.85 - V
Low Level Input Voltage VIL - - 1.5 - 0.3 - 0.3 - 0.3 V
3 - 0.9 - 0.9 - 0.9 V
5.5 - 1.65 - 1.65 - 1.65 V
High Level Output Voltage VOH VIH or VIL -0.05 1.5 1.4 - 1.4 - 1.4 - V
-0.05 3 2.9 - 2.9 - 2.9 - V
-0.05 4.5 4.4 - 4.4 - 4.4 - V
-4 3 2.58 - 2.48 - 2.4 - V
-24 4.5 3.94 - 3.8 - 3.7 - V
-75
(Note 6, 7) 5.5 - - 3.85 - - - V
-50
(Note 6, 7) 5.5----3.85 - V
CD54/74AC257, CD54/74ACT257, CD74ACT258
4
Low Level Output Voltage VOL VIH or VIL 0.05 1.5 - 0.1 - 0.1 - 0.1 V
0.05 3 - 0.1 - 0.1 - 0.1 V
0.05 4.5 - 0.1 - 0.1 - 0.1 V
12 3 - 0.36 - 0.44 - 0.5 V
24 4.5 - 0.36 - 0.44 - 0.5 V
75
(Note 6, 7) 5.5 - - - 1.65 - - V
50
(Note 6, 7) 5.5-----1.65 V
Input Leakage Current IIVCC or
GND - 5.5 - ±0.1 - ±1-±1µA
Three-State Leakage
Current IOZ VIH or VIL
VO=V
CC
or GND
- 5.5 - ±0.5 - ±5-±10 µA
Quiescent Supply Current
MSI ICC VCC or
GND 0 5.5 - 8 - 80 - 160 µA
ACT TYPES
High Level Input Voltage VIH - - 4.5 to
5.5 2-2-2-V
Low Level Input Voltage VIL - - 4.5 to
5.5 - 0.8 - 0.8 - 0.8 V
High Level Output Voltage VOH VIH or VIL -0.05 4.5 4.4 - 4.4 - 4.4 - V
-24 4.5 3.94 - 3.8 - 3.7 - V
-75
(Note 6, 7) 5.5 - - 3.85 - - - V
-50
(Note 6, 7) 5.5----3.85 - V
Low Level Output Voltage VOL VIH or VIL 0.05 4.5 - 0.1 - 0.1 - 0.1 V
24 4.5 - 0.36 - 0.44 - 0.5 V
75
(Note 6, 7) 5.5 - - - 1.65 - - V
50
(Note 6, 7) 5.5-----1.65 V
Input Leakage Current IIVCC or
GND - 5.5 - ±0.1 - ±1-±1µA
Three-State or Leakage
Current IOZ VIH or VIL
VO=V
CC
or GND
- 5.5 - ±0.5 - ±5-±10 µA
Quiescent Supply Current
MSI ICC VCC or
GND 0 5.5 - 8 - 80 - 160 µA
AdditionalSupplyCurrentper
Input Pin TTL Inputs High
1 Unit Load
ICC VCC
-2.1 - 4.5 to
5.5 - 2.4 - 2.8 - 3 mA
NOTES:
6. Test one output at a time for a 1-second maximum duration. Measurement is made by forcing current and measuring voltage to minimize
power dissipation.
7. Test verifies a minimum 50 transmission-line-drive capability at 85oC, 75 at 125oC.
DC Electrical Specifications (Continued)
PARAMETER SYMBOL
TEST
CONDITIONS VCC
(V)
25oC-40oC TO
85oC-55oC TO
125oC
UNITSVI(V) IO(mA) MIN MAX MIN MAX MIN MAX
CD54/74AC257, CD54/74ACT257, CD74ACT258
5
ACT Input Load Table
INPUT UNIT LOAD
Data 0.83
S 1.27
OE 1.27
NOTE: Unit load is ICC limit specified in DC Electrical Specifications
Table, e.g., 2.4mA max at 25oC.
Switching Specifications Input tr, tf = 3ns, CL= 50pF (Worst Case)
PARAMETER SYMBOL VCC (V)
-40oC TO 85oC -55oC TO 125oC
UNITSMIN TYP MAX MIN TYP MAX
AC TYPES
Propagation Delay,
In to Y
AC/ACT257
tPLH, tPHL 1.5 - - 106 - - 117 ns
3.3
(Note 9) 3.3 - 11.8 3.3 - 13 ns
5
(Note 10) 2.4 - 8.5 2.3 - 9.3 ns
Propagation Delay,
S to Y
AC/ACT257
tPLH, tPHL 1.5 - - 153 - - 168 ns
3.3 4.8 - 17.1 4.7 - 18.8 ns
5 3.5 - 12.2 3.4 - 13.4 ns
Propagation Delay,
OE to Y
AC/ACT257
tPLZ, tPHZ,
tPZL, tPZH 1.5 - - 167 - - 184 ns
3.3 5.3 - 18.7 5.2 - 20.6 ns
5 3.8 - 13.4 3.7 - 14.7 ns
Propagation Delay,
In to Y
’AC/CD74ACT258
tPLH, tPHL 1.5 - - 91 - - 100 ns
3.3 2.9 - 10.2 2.8 - 11.2 ns
5 2.1 - 7.3 2 - 8 ns
Propagation Delay,
S to Y
’AC/CD74ACT258
tPLH, tPHL 1.5 - - 153 - - 168 ns
3.3 4.8 - 17.1 4.7 - 18.8 ns
5 3.5 - 12.2 3.4 - 13.4 ns
Propagation Delay,
OE to Y
’AC/CD74ACT258
tPLZ, tPHZ,
tPZL, tPZH 1.5 - - 167 - - 184 ns
3.3 5.3 - 18.7 5.2 - 20.6 ns
5 3.8 - 13.4 3.7 - 14.7 ns
Three-State Output
Capacitance CO- - -15- -15pF
Input Capacitance CI- - -10- -10pF
Power Dissipation Capacitance CPD
(Note 11) - - 130 - - 130 - pF
ACT TYPES
Propagation Delay,
In to Y
AC/ACT257
tPLH, tPHL 5
(Note 10) 2.8 - 9.7 2.7 - 10.7 ns
Propagation Delay,
S to Y
AC/ACT257
tPLH, tPHL 5 4 - 14 3.9 - 15.4 ns
CD54/74AC257, CD54/74ACT257, CD74ACT258
6
Propagation Delay,
OE to Y
AC/ACT257
tPLZ, tPHZ,
tPZL, tPZH 5 4.1 - 14.6 4 - 16.1 ns
Propagation Delay,
In to Y
’AC/CD74ACT258
tPLH, tPHL 5 2.4 - 8.5 2.3 - 9.3 ns
Propagation Delay,
S to Y
’AC/CD74ACT258
tPLH, tPHL 5 4 - 14 3.9 - 15.4 ns
Propagation Delay,
OE to Y
’AC/CD74ACT258
tPLZ, tPHZ,
tPZL, tPZH 5 4.1 - 14.6 4 - 16.1 ns
Three-State Output
Capacitance CO- - -15- -15pF
Input Capacitance CI- - -10- -10pF
Power Dissipation Capacitance CPD
(Note 11) - - 130 - - 130 - pF
NOTES:
8. Limits tested 100%.
9. 3.3V Min is at 3.6V, Max is at 3V.
10. 5V Min is at 5.5V, Max is at 4.5V.
11. CPD is used to determine the dynamic power consumption per multiplexer.
AC: PD = CPD VCC2 fi + (CL VCC2 fo)
ACT: PD=C
PD VCC2fi+(CLVCC2fo)+V
CC ICC where fi= input frequency, fo= output frequency, CL= output load capacitance,
VCC = supply voltage.
FIGURE 1. THREE-STATE PROPAGATION DELAY TIMES AND TEST CIRCUIT
Switching Specifications Input tr, tf = 3ns, CL= 50pF (Worst Case) (Continued)
PARAMETER SYMBOL VCC (V)
-40oC TO 85oC -55oC TO 125oC
UNITSMIN TYP MAX MIN TYP MAX
DUT
WITH
THREE-
STATE
OUTPUT
INPUT LEVEL
90%
VS
10%
GND
tf = 3ns
tPZL
tPZH
tPLZ
tPHZ
OUTPUTS
ENABLED OUTPUTS
DISABLED
OUTPUT: LOW
T O OFF TO LOW
OUTPUT: HIGH
T O OFF TO HIGH
OTHER
INPUTS
(TIED HIGH
OR LO W)
OUTPUT
DISABLE
CL
50pF
500
RL
500
RL
OUT
VS
0.2VCC VOL (GND)
VOH (VCC)
0.8 VCC
VS
GND (tPHZ, tPZH)
OUTPUTS
ENABLED
OPEN (tPHL, tPLH)
2 VCC (tPLZ, tPZL)
(OPEN DRAIN)
tr = 3ns
OUTPUT
DISABLE
FOR A C SERIES ONLY: WHEN VCC = 1.5V, RL = 1k
CD54/74AC257, CD54/74ACT257, CD74ACT258
7
FIGURE 2. INPUTS OR SELECT TO OUTPUT PROPAGATION
DELAYS (AC/ACT257) FIGURE 3. SELECT TO OUTPUT PROPAGATION DELAYS
(CD74ACT258)
90%
10%
tf = 3nstr = 3ns
nI0, nI1, S
tPLH tPHL
VS
Y
INPUT
LEVEL
GND
VS
INPUT LEVEL
VS
S
tPLH tPHL
VS
Y
DUT
OUTPUT
RL (NOTE)
OUTPUT
LOAD
500
CL
50pF
NOTE: For AC Series Only: When VCC = 1.5V, RL = 1kΩ.
FIGURE 4. PROPAGATION DELAY TIMES
AC ACT
Input Level VCC 3V
Input Switching Voltage, VS0.5 VCC 1.5V
Output Switching Voltage, VS0.5 VCC 0.5 VCC
CD54/74AC257, CD54/74ACT257, CD74ACT258
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PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
CD54AC257F3A ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
CD54ACT257F3A ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
CD74AC257E ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
CD74AC257EE4 ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
CD74AC257M ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257M96 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257M96E4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257M96G4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257ME4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257MG4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257E ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
CD74ACT257EE4 ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
CD74ACT257M ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257M96 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257M96E4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257M96G4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257ME4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257MG4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT258M ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258M96 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258M96E4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258M96G4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258ME4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258MG4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Nov-2009
Addendum-Page 1
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
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information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Nov-2009
Addendum-Page 2
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0 (mm) B0 (mm) K0 (mm) P1
(mm) W
(mm) Pin1
Quadrant
CD74AC257M96 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
CD74ACT257M96 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
CD74ACT257M96 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
CD74ACT258M96 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 19-Mar-2008
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
CD74AC257M96 SOIC D 16 2500 333.2 345.9 28.6
CD74ACT257M96 SOIC D 16 2500 346.0 346.0 33.0
CD74ACT257M96 SOIC D 16 2500 333.2 345.9 28.6
CD74ACT258M96 SOIC D 16 2500 333.2 345.9 28.6
PACKAGE MATERIALS INFORMATION
www.ti.com 19-Mar-2008
Pack Materials-Page 2
PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
CD54AC257F3A ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
CD54ACT257F3A ACTIVE CDIP J 16 1 TBD A42 N / A for Pkg Type
CD74AC257E ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
CD74AC257EE4 ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
CD74AC257M ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257M96 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257M96E4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257M96G4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257ME4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74AC257MG4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257E ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
CD74ACT257EE4 ACTIVE PDIP N 16 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
CD74ACT257M ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257M96 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257M96E4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257M96G4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257ME4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT257MG4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
CD74ACT258M ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258M96 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258M96E4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258M96G4 ACTIVE SOIC D 16 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258ME4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
CD74ACT258MG4 ACTIVE SOIC D 16 40 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Nov-2009
Addendum-Page 1
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Nov-2009
Addendum-Page 2
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
CD74AC257M96 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
CD74ACT257M96 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
CD74ACT257M96 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
CD74ACT258M96 SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
CD74AC257M96 SOIC D 16 2500 333.2 345.9 28.6
CD74ACT257M96 SOIC D 16 2500 367.0 367.0 38.0
CD74ACT257M96 SOIC D 16 2500 333.2 345.9 28.6
CD74ACT258M96 SOIC D 16 2500 333.2 345.9 28.6
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
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