74VHC74M - National Semiconductor

TL/F/11505

74VHC74 #74VHCT74 Dual D-Type Flip Flop with Preset and Clear

October 1995

74VHC74 #74VHCT74

Dual D-Type Flip Flop with Preset and Clear

General Description

The VHC/VHCT74 is an advanced high speed CMOS Dual

D-Flip Flop fabricated with silicon gate CMOS technology. It

achieves the high speed operation similar to equivalent Bi-

polar Schottky TTL while maintaining the CMOS low power

dissipation. The signal level applied to the D INPUT is trans-

ferred to the Q OUTPUT during the positive going transition

of the CK pulse. CLR and PR are independent of the CK

and are accomplished by setting the appropriate input low.

An input protection circuit ensures that 0V to 7V can be

applied to the input pins without regard to the supply voI-

tage. This device can be used to interface 5V to 3V systems

and two supply systems such as battery backup. This circuit

prevents device destruction due to mismatched supply and

input voltages.

Features

YHigh noise immunity:

VHC VNIH eVNIL e28% VCC (min)

VHCT VIH e2.0V, VIL e0.8V

YPower down protection:

VHC inputs only

VHCT inputs and outputs

YLow power dissipation:

ICC e2mA (max) at TAe25§C

YBalanced propagation delays: tPLH jtPHL

NOTE: ADD EXTERNAL PULL UP RESISTOR TO ’VHCT

OUTPUTS TO DRIVE CMOS INPUTS

Commercial Package Number Package Description

74VHC74M M14A 14-Lead Molded JEDEC SOIC

74VHC74SJ M14D 14-Lead Molded EIAJ SOIC

74VHC74MSC MSC14 14-Lead Molded EIAJ Type 1 SSOP

74VHC74MTC MTC14 14-Lead Molded JEDEC Type 1 TSSOP

74VHC74N N14A 14-Lead Molded DIP

74VHCT74M M14A 14-Lead Molded JEDEC SOIC

74VHCT74SJ M14D 14-Lead Molded EIAJ SOIC

74VHCT74MTC MTC14 14-Lead Molded JEDEC Type 1 TSSOP

74VHCT74N N14A 14-Lead Molded DIP

Note: Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter ‘‘X’’ to the ordering code.

EIAJ Type 1 SSOP available on Tape and Reel only, Order MSCX.

Logic Symbol

IEEE/IEC

TL/F/11505–1

Connection Diagram

Pin Assignment for DIP,

SSOP, TSSOP and SOIC

TL/F/11505–2

Pin Names Description

D1,D

2Data Inputs

CK1,CK

2Clock Pulse Inputs

CLR1, CLR2Direct Clear Inputs

PR1,PR

2Direct Preset Inputs

Q1,Q

2Outputs

Inputs Outputs Function

CLR PR DCK Q Q

L H X X L H Clear

H L X X H L Preset

LLXXHH

HHL£LH

HHH£HL

HHXÞQ

No Change

C1995 National Semiconductor Corporation RRD-B30M125/Printed in U. S. A.

Absolute Maximum Ratings (Note 1)

Supply Voltage (VCC)b0.5V to a7.0V

DC Input Voltage (VIN)b0.5V to a7.0V

DC Output VoItage (VOUT)

VHC b0.5V to VCC a0.5V

VHCT*b0.5V to 7.0V

Input Diode Current (IIK)b20 mA

Output Diode Current (IOK)

VHC g20 mA

VHCT b20 mA

DC Output Current (IOUT)g25 mA

DC VCC/GND Current (ICC)g50 mA

Storage Temperature (TSTG)b65§Ctoa

150§C

Lead Temperature (TL)

Soldering (10 seconds) 260§C

*VOUT lVCC only if output is in H state.

Note 1:

Absolute maximum ratings are values beyond which

the device may be damaged or have its useful life impaired.

The databook specifications should be met, without excep-

tion, to ensure that the system design is reliable over its

power supply, temperature, and output/input loading varai-

bles. National does not recommend operation outside data-

book specifications.

Recommended Operating

Conditions

Supply Voltage (VCC)

VHC 2.0V to 5.5V

VHCT 4.5V to 5.5V

Input Voltage (VIN)0Vto

5.5V

Output Voltage (VOUT) 0VtoV

Operating Temperature (TOPR)

74VHC/VHCT b40§Ctoa

85§C

Input Rise and Fall Time (tr,t

)

CC e3.3V g0.3V (VHC only) 0 E100 ns/V

VCC e5.0V g0.5V 0 E20 ns/V

DC Characteristics for ’VHC Family Devices

Symbol Parameter VCC

(V)

74VHC 74VHC

Units Conditions

TAe25§CTAeb

40§C

to a85§C

Min Typ Max Min Max

VIH High Level Input 2.0 1.50 1.50 V

Voltage 3.0– 5.5 0.7 VCC 0.7 VCC

VIL Low Level Input 2.0 0.50 0.50 V

Voltage 3.0– 5.5 0.3 VCC 0.3 VCC

VOH High Level Output 2.0 1.9 2.0 1.9 VIN eVIH IOH eb

50 mA

Voltage 3.0 2.9 3.0 2.9 V or VIL

4.5 4.4 4.5 4.4

3.0 2.58 2.48 VIOH eb

4mA

4.5 3.94 3.80 IOH eb

8mA

OL Low Level Output 2.0 0.0 0.1 0.1 VIN eVIH IOL e50 mA

Voltage 3.0 0.0 0.1 0.1 V or VIL

4.5 0.0 0.1 0.1

3.0 0.36 0.44 VIOL e4mA

4.5 0.36 0.44 IOL e8mA

IN Input Leakage 0– 5.5 g0.1 g1.0 mAVIN e5.5V or GND

Current

ICC Quiescent Supply 5.5 2.0 20.0 mAVIN eVCC or GND

Current

DC Characteristics for ’VHCT Family Devices

Symbol Parameter VCC

(V)

74VHCT 74VHCT

Units Conditions

TAe25§CTAeb

40§C

to a85§C

Min Typ Max Min Max

VIH High Level 4.5 2.0 2.0 V

Input Voltage 5.5 2.0 2.0

VIL Low Level 4.5 0.8 0.8 V

Input Voltage 5.5 0.8 0.8

VOH High Level Output 4.5 3.15 3.65 3.15 VVIN eVIH IOH eb

50 mA

Voltage 4.5 2.5 2.4 or VIL IOH eb

8mA

OL Low Level Output 4.5 0.0 0.1 0.1 VVIN eVIH IOL e50 mA

Voltage 4.5 0.36 0.44 or VIL IOL e8mA

IN Input Leakage Current 0–5.5 g0.1 g1.0 mAV

IN e5.5V or GND

ICC Quiescent Supply 5.5 2.0 20.0 mAVIN eVCC or GND

Current

ICCT Maximum 5.5 1.35 1.50 mA VIN e3.4V

ICC/Input Other Inputs eVCC or GND

IOPD Output Leakage VOUT e5.5V

Current (Power 0.0 a0.5 a5.0 mA

Down State)

AC Electrical Characteristics for ’VHC

Symbol Parameter VCC

(V)

74VHC 74VHC

Units Conditions

TAe25§CTAeb

40§C

to a85§C

Min Typ Max Min Max

fMAX Maximum Clock 3.3 g0.3 80 125 70 MHz CLe15 pF

Frequency 50 75 45 CLe50 pF

5.0 g0.5 130 170 110 MHz CLe15 pF

90 115 75 CLe50 pF

tPLH, Propagation Delay 3.3 g0.3 6.7 11.9 1.0 14.0 ns CLe15 pF

tPHL Time (CK-Q, Q) 9.2 15.4 1.0 17.5 CLe50 pF

5.0 g0.5 4.6 7.3 1.0 8.5 ns CLe15 pF

6.1 9.3 1.0 10.5 CLe50 pF

tPLH, Propagation Delay Time 3.3 g0.3 7.6 12.3 1.0 14.5 ns CLe15 pF

tPHL (CLR,PR-Q, Q) 10.1 15.8 1.0 18.0 CLe50 pF

5.0 g0.5 4.8 7.7 1.0 9.0 ns CLe15 pF

6.3 9.7 1.0 11.0 CLe50 pF

CIN Input Capacitance 4 10 10 pF VCC eOpen

CPD Power Dissipation 25 pF (Note 1)

Capacitance

Note 1: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average

operating current can be obtained from the equation: ICC (opr.) eCPD *VCC *fIN aICC/2 (per F/F).

AC Operating Requirements for ’VHC

Symbol Parameter *VCC

(V)

74VHC 74VHC

Units Conditions

TAe25§CTAeb

40§C

to a85§C

Typ Guaranteed Minimum

tW(L) Minimum Pulse Width (CK) 3.3 6.0 7.0 ns

tW(H) 5.0 5.0 5.0

tW(L) Minimum Pulse Width (CLR,PR) 3.3 6.0 7.0 ns

5.0 5.0 5.0

tSMinimum Setup Time 3.3 6.0 7.0 ns

5.0 5.0 5.0

tHMinimum Hold Time 3.3 0.5 0.5 ns

5.0 0.5 0.5

trem Minimum Removal Time (CLR,PR) 3.3 5.0 5.0 ns

5.0 3.0 3.0

*VCC is 3.3 g0.3V or 5.0 g0.5V

AC Electrical Characteristics for ’VHCT

Symbol Parameter *VCC

(V)

74VHCT 74VHCT

Units Conditions

TAe25§CTAeb

40§C

to a85§C

Min Typ Max Min Max

fMAX Maximum Clock 5.0 100 160 80 MHz CLe15 pF

Frequency 5.0 80 140 65 CLe50 pF

tPLH, Propagation Delay 5.0 5.8 7.8 1.0 9.0 ns CLe15 pF

tPHL Time (CK-Q, Q) 5.0 6.3 8.8 1.0 10.0 CLe50 pF

tPLH, Propagation Delay Time 5.0 7.6 10.4 1.0 12.0 ns CLe15 pF

tPHL (CLR,PR-Q, Q) 5.0 8.1 11.4 1.0 13.0 CLe50 pF

CIN Input Capacitance 4 10 10 pF VCC eOpen

CPD Power Dissipation 24 pF (Note 1)

Capacitance

*VCC is 5.0 g0.5V

Note 1: CPD is defined as the value of internal equivalent capacitance which is calculcated from the operating current consumption without load. Average operating

current can be obtained by the equation: ICC (opr) eCPD cVCC cfIN aICC/2 (per flip-flop).

AC Operating Requirements for ’VHCT

Symbol Parameter VCC

(V)

74VHCT 74VHCT

Units Conditions

TAe25§CTAeb

40§C

to a85§C

Typ Guaranteed Minimum

tW(L) Minimum Pulse Width 5.0 g0.5 5.0 ns

tW(H) (CK)

tW(L) Minimum Pulse Width 5.0 g0.5 5.0 5.0 ns

(CLR,PR)

SMinimum Setup Time 5.0 g0.5 5.0 5.0 ns

tHMinimum Hold Time 5.0 g0.5 0 0 ns

trem Minimum Removal 5.0 g0.5 3.5 3.5 ns

Time (CLR,PR)

Ordering Information

The device number is used to form part of a simplified purchasing code, where the package type and temperature range are

defined as follows:

TL/F/11505–5

Physical Dimensions inches (millimeters)

14-Lead Small Outline Integrated CircuitÐJEDEC (M)

Order Number 74VHC74M, 74VHC74MX, 74VHCT74M or 74VHCT74MX

NS Package Number M14A

14-Lead Small Outline Package - EIAJ (SJ)

Order Number 74VHC74SJ, 74VHC74SJX, 74VHCT74SJ or 74VHCT74SJX

NS Package Number M14D

Physical Dimensions millimeters (Continued)

14-Lead Plastic EIAJ SSOP Type 1 (MSC)

Order Number 74VHC74MSCX

NS Package Number MSC14

14-Lead Plastic JEDEC TSSOP Type 1 (MTC)

Order Number 74VHC74MTC, 74VHC74MTCX, 74VHCT74MTC or 74VHCT74MTCX

NS Package Number MTC14

74VHC74 #74VHCT74 Dual D-Type Flip Flop with Preset and Clear

Physical Dimensions inches (millimeters) (Continued)

14-Lead Molded Dual In-Line Package

Order Number 74VHC74N or 74VHCT74N

NS Package Number N14A

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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL

SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or 2. A critical component is any component of a life

systems which, (a) are intended for surgical implant support device or system whose failure to perform can

into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life

failure to perform, when properly used in accordance support device or system, or to affect its safety or

with instructions for use provided in the labeling, can effectiveness.

be reasonably expected to result in a significant injury

to the user.

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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.