INDUSTRIAL TEMPERATURE RANGE
IDT74ALVCHS162830
3.3V CMOS 1-BIT TO 2-BIT ADDRESS DRIVER WITH 3-STATE OUTPUTS
1OCTOBER 1999INDUSTRIAL TEMPERATURE RANGE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
©1999 Integrated Device Technology, Inc. DSC-4718/2
FEATURES:
• 0.5 MICRON CMOS Technology
• Typical tSK(o) (Output Skew) < 250ps
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
•VCC = 3.3V ± 0.3V, Normal Range
•VCC = 2.7V to 3.6V, Extended Range
•VCC = 2.5V ± 0.2V
• CMOS power levels (0.4µµ
µµ
µ W typ. static)
• Rail-to-Rail output swing for increased noise margin
• Available in TVSOP package
FUNCTIONAL BLOCK DIAGRAM
DRIVE FEATURES:
• Balanced Output Drivers: ±12mA
• Low switching noise
IDT74ALVCHS162830
3.3V CMOS 1-BIT TO 2-BIT
ADDRESS DRIVER WITH
3-STATE OUTPUTS AND
BUS-HOLD DESCRIPTION:
This 1-bit to 2-bit address driver is built using advanced dual metal CMOS
technology. Diodes to VCC have been added on the inputs to clamp
overshoot.
The ALVCHS162830 has series resistors in the device output structure
which will significantly reduce line noise when used with light loads. This
driver has been designed to drive ±12mA at the designated threshold
levels.
The ALVCHS162830 has “bus-hold” which retains the inputs’ last state
whenever the input bus goes to a high impedance. This prevents floating
inputs and eliminates the need for pull-up/down resistors.
APPLICATIONS:
• SDRAM Modules
• PC Motherboards
• Workstations
A1
TO 17 OTHER CHANNELS
OE221
7
20
OE1
4
51Y1
2Y1
VCC
VCC
VCC
INDUSTRIAL TEMPERATURE RANGE
2
IDT74ALVCHS162830
3.3V CMOS 1-BIT TO 2-BIT ADDRESS DRIVER WITH 3-STATE OUTPUTS
TVSOP
TOP VIEW
PIN CONFIGURATION
Pin Names Description
OEx 3-State Output Enable Inputs (Active LOW)
Ax Data Inputs(1)
xYx 3-State Outputs
PIN DESCRIPTION
Symbol Description Max Unit
VTERM(2) Terminal Voltage with Respect to GND –0.5 to +4.6 V
VTERM(3) Terminal Voltage with Respect to GND –0.5 to VCC+0.5 V
TSTG Storage Temperature –65 to +150 °C
IOUT DC Output Current –50 to +50 mA
IIK Continuous Clamp Current, ±50 mA
VI < 0 or VI > VCC
IOK Continuous Clamp Current, VO < 0 –50 mA
ICC Continuous Current through each ±1 0 0 mA
ISS VCC or GND
ABSOLUTE MAXIMUM RATINGS(1)
NOTES:
1 . Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
2. VCC terminals.
3. All terminals except VCC.
NOTE:
1. These pins have "Bus-Hold". All other pins are standard inputs, outputs, or I/Os.
FUNCTION TABLE(1)
NOTE:
1 . H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
Inputs Outputs
OE1OE2Ax 1Yx 2Yx
LHH H Z
LHL L Z
HLH Z H
HLL Z L
LLH H H
LLL L L
HHX Z Z
NOTE:
1. As applicable to the device type.
Symbol Parameter(1) Conditions Typ. Max. Unit
CIN Input Capacitance VIN = 0V 5 7 pF
COUT Output Capacitance VOUT = 0V 7 9 pF
COUT I/O Port Capacitance VIN = 0V 7 9 pF
CAPACITANCE (TA = +25°C, F = 1.0MHz)
GND
GND
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
72
73
74
75
76
77
78
79
80
1
GND GND
GND
25
26
27
28
56
55
54
53
GND
A1
2Y2
A2
A3
A4
A5
A6
A7
A8
A9
VCC
GND
VCC
GND
VCC
VCC
OE1
29
30
31
32
33
34
36
35
37
38
VCC
GND
52
51
50
49
48
47
46
GND
45
44
43
VCC
GND
39 42
40 41
1Y2
2Y1
1Y1
OE2
VCC
GND
GND
2Y18
GND
VCC
1Y3
2Y3
1Y4
2Y4
1Y5
2Y5
1Y6
2Y6
1Y7
2Y7
1Y8
2Y8
1Y9
2Y9
1Y10
2Y10
1Y11
2Y11
2Y12
1Y12
2Y13
1Y13
GND
2Y14
1Y14
1Y15
2Y15
2Y16
1Y16
A10
A12
A11
A14
A13
A15
A16
GND
A17
A18
1Y18
2Y17
1Y17
INDUSTRIAL TEMPERATURE RANGE
IDT74ALVCHS162830
3.3V CMOS 1-BIT TO 2-BIT ADDRESS DRIVER WITH 3-STATE OUTPUTS
3
Symbol Parameter Test Conditions Min. Typ.(1) Max. Unit
VIH Input HIGH Voltage Level VCC = 2.3V to 2.7V 1.7 — — V
VCC = 2.7V to 3.6V 2 — —
VIL Input LOW Voltage Level VCC = 2.3V to 2.7V — — 0.7 V
VCC = 2.7V to 3.6V — — 0.8
IIH Input HIGH Current VCC = 3.6V VI = VCC ——±5µA
IIL Input LOW Current VCC = 3.6V VI = GND — — ±5µA
IOZH High Impedance Output Current VCC = 3.6V VO = VCC ——±10 µA
IOZL (3-State Output pins) VO = GND — — ±10
VIK Clamp Diode Voltage VCC = 2.3V, IIN = –18mA — –0.7 –1.2 V
VHInput Hysteresis VCC = 3.3V — 100 — mV
ICCL Quiescent Power Supply Current VCC = 3.6V — 0.1 40 µA
ICCH VIN = GND or VCC
ICCZ
∆ICC Quiescent Power Supply Current One input at VCC - 0.6V, other inputs at VCC or GND — — 750 µA
Variation
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = –40°C to +85°C
NOTE:
1. Typical values are at VCC = 3.3V, +25°C ambient.
BUS-HOLD CHARACTERISTICS
Symbol Parameter(1) Test Conditions Min. Typ.(2) Max. Unit
IBHH Bus-Hold Input Sustain Current VCC = 3V VI = 2V – 75 — — µA
IBHL VI = 0.8V 75 — —
IBHH Bus-Hold Input Sustain Current VCC = 2.3V VI = 1.7V – 45 — — µ A
IBHL VI = 0.7V 45 — —
IBHHO Bus-Hold Input Overdrive Current VCC = 3.6V VI = 0 to 3.6V — — ±500 µA
IBHLO
NOTES:
1. Pins with Bus-Hold are identified in the pin description.
2. Typical values are at VCC = 3.3V, +25°C ambient.
INDUSTRIAL TEMPERATURE RANGE
4
IDT74ALVCHS162830
3.3V CMOS 1-BIT TO 2-BIT ADDRESS DRIVER WITH 3-STATE OUTPUTS
NOTE:
1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range.
TA = – 40°C to + 85°C.
OUTPUT DRIVE CHARACTERISTICS
Symbol Parameter Test Conditions(1) Min. Max. Unit
VOH Output HIGH Voltage VCC = 2.3V to 3.6V IOH = – 0.1mA VCC – 0.2 — V
VCC = 2.3V IOH = – 4mA 1.9 —
IOH = – 6mA 1.7 —
VCC = 2.7V IOH = – 4mA 2.2 —
IOH = – 8mA 2 —
VCC = 3V IOH = – 6mA 2.4 —
IOH = – 12mA 2 —
VOL Output LOW Voltage VCC = 2.3V to 3.6V IOL = 0.1mA — 0.2 V
VCC = 2.3V IOL = 4mA — 0.4
IOL = 6m A — 0.55
VCC = 2.7V IOL = 4mA — 0.4
IOL = 8mA — 0.6
VCC = 3V IOL = 6m A — 0.55
IOL = 12mA — 0 .8
OPERATING CHARACTERISTICS, TA = 25°C
VCC = 2.5V ± 0.2V VCC = 3.3V ± 0.3V
Symbol Parameter Test Conditions Typical Typical Unit
CPD Power Dissipation Capacitance per Driver Outputs enabled CL = 0pF, f = 10Mhz 49 53 pF
CPD Power Dissipation Capacitance per Driver Outputs disabled 6 7.5
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
2 Skew between any two outputs of the same package and switching in the same direction.
SWITCHING CHARACTERISTICS(1)
VCC = 2.5V ± 0.2V VCC = 2.7V VCC = 3.3V ± 0.3V
Symbol Parameter Min. Max. Min. Max. Min. Max. Unit
tPLH Propagation Delay 1.2 3.8 —4 1.7 3.5 ns
tPHL Ax to xYx
tPZH Output Enable Time 1 5.7 —5.7 1 4.8 ns
tPZL OEx to xYx
tPHZ Output Disable Time 1 4.9 —5.4 1.7 5.2 ns
tPLZ OEx to xYx
tSK(O) Output Skew(2) —————500 ps
INDUSTRIAL TEMPERATURE RANGE
IDT74ALVCHS162830
3.3V CMOS 1-BIT TO 2-BIT ADDRESS DRIVER WITH 3-STATE OUTPUTS
5
Open
VLOAD
GND
VCC
Pulse
Generator D.U.T.
500Ω
500Ω
CL
RT
VIN VOUT
(1, 2)
ALVC Link
INPUT
VIH
0V
VOH
VOL
tPLH1
tSK (x)
OUTPUT 1
OUTPUT 2
tPHL1
tSK (x)
tPLH2 tPHL2
VT
VT
VOH
VT
VOL
tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1
ALVC Link
SAME PHASE
INPU T TRAN SITION
OPPOSITE PHASE
INPU T TRAN SITION
0V
0V
VOH
VOL
tPLH tPHL
tPHL
tPLH
OUTPUT
VIH
VT
VT
VIH
VT
ALVC Link
DATA
INPUT 0V
0V
0V
0V
tREM
TIMING
INPUT
SYNCHRONOUS
CONTROL
tSU tH
tSU tH
VIH
VT
VIH
VT
VIH
VT
VIH
VT
ALVC Link
ASYNCHRONOUS
CONTROL
LOW-HIGH-LOW
PULSE
HIGH-LOW-HIGH
PULSE
VT
tW
VT
ALVC Link
CONTROL
INPUT tPLZ 0V
OUTPUT
NORMALLY
LOW tPZH
0V
SWITCH
CLOSED
OUTPUT
NORMALLY
HIGH
ENABLE DISABLE
SWITCH
OPEN
tPHZ
0V
VLZ
VOH
VT
VT
tPZL
VLOAD/2 VLOAD/2
VIH
VT
VOL
VHZ
ALVC Link
TEST CIRCUITS AND WAVEFORMS
Propagation Delay
Test Circuit for All Outputs
Enable and Disable Times
Set-up, Hold, and Release Times
NOTES:
1. For tSK(o) OUTPUT1 and OUTPUT2 are any two outputs.
2. For tSK(b) OUTPUT1 and OUTPUT2 are in the same bank.
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
NOTES:
1. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2ns; tR ≤ 2ns.
Output Skew - tSK(X)
Pulse Width
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
Symbol VCC(1)= 3.3V±0.3V VCC(1)= 2.7V VCC(2)= 2.5V±0.2V Unit
VLOAD 6 6 2 x Vcc V
VIH 2.7 2.7 Vcc V
VT1.5 1.5 Vcc / 2 V
VLZ 300 300 150 mV
VHZ 300 300 150 mV
CL50 50 30 pF
TEST CONDITIONS
SWITCH POSITION
Test Switch
Open Drain
Disable Low VLOAD
Enable Low
Disable High GND
Enable High
All Other Tests Open
INDUSTRIAL TEMPERATURE RANGE
6
IDT74ALVCHS162830
3.3V CMOS 1-BIT TO 2-BIT ADDRESS DRIVER WITH 3-STATE OUTPUTS
ORDERING INFORMATION
CORPORATE HEADQUARTERS for SALES: for Tech Support:
2975 Stender Way 800-345-7015 or 408-727-6116 logichelp@idt.com
Santa Clara, CA 95054 fax: 408-492-8674 (408) 654-6459
www.idt.com
IDT XX ALVC XXX XX
PackageDevice Type
Temp. Range
DF
DFG
S162
74
Thin Very Small Outline Package
TVSOP - Green
1-Bit to 2-Bit Address Driver with 3-State Outputs
–40°C to +85°C
XXXX
FamilyBus-Hold
830
Double-Density with Resistors and Clamps to VCC, ±12mA
Bus-Hold
H
