SN74AHCT1G32
SINGLE 2-INPUT POSITIVE-OR GATE
SCLS320I – MARCH 1996 – REVISED JANUARY 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
EPIC
(Enhanced-Performance Implanted
CMOS) Process
D
Inputs Are TTL-Voltage Compatible
D
Latch-Up Performance Exceeds 250 mA Per
JESD 17
D
Package Options Include Plastic
Small-Outline Transistor (DBV, DCK)
Packages
description
The SN74AHCT1G32 is a single 2-input positive-OR gate. The device performs the Boolean function
Y+A)BorY+A • B in positive logic.
The SN74AHCT1G32 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
OUTPUT
A B
Y
H X H
X HH
L L L
logic symbol
†
1
A
2
B
Y
4
≥1
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
1
2
4
A
B
Y
DBV OR DCK PACKAGE
(TOP VIEW)
1
2
3
5
4
A
B
GND
V
CC
Y
Copyright 2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
EPIC is a trademark of Texas Instruments Incorporated.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SN74AHCT1G32
SINGLE 2-INPUT POSITIVE-OR GATE
SCLS320I – MARCH 1996 – REVISED JANUARY 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, VCC –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
(see Note 1) –0.5 V to VCC + 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0) –20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0 or VO > VCC) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, I
O
(V
O
= 0 to VCC) ±25 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through VCC or GND ±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): DBV package 347°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DCK package 389°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions (see Note 3)
MIN MAX UNIT
V
CC
Supply voltage 4.5 5.5 V
V
IH
High-level input voltage 2 V
V
IL
Low-level input voltage 0.8 V
V
I
Input voltage 0 5.5 V
V
O
Output voltage 0 V
CC
V
I
OH
High-level output current –8 mA
I
OL
Low-level output current 8 mA
∆t/∆v Input transition rise or fall rate 20 ns/V
T
A
Operating free-air temperature –40 85 °C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
TA = 25°C
PARAMETER
TEST CONDITIONS
V
CC
MIN TYP MAX
MIN
MAX
UNIT
IOH = –50 mA
4.4 4.5 4.4
V
OH
IOH = –8 mA
4.5 V
3.94 3.8
V
IOL = 50 mA
0.1 0.1
V
OL
IOL = 8 mA
4.5 V
0.36 0.44
V
I
I
VI = VCC or GND 0 V to 5.5 V ±0.1 ±1 µA
I
CC
VI = VCC or GND, IO = 0 5.5 V 1 10 µA
∆I
CC
‡
One input at 3.4 V , Other inputs at VCC or GND 5.5 V 1.35 1.5 mA
C
i
VI = VCC or GND 5 V 2 10 10 pF
‡
This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or VCC.
SN74AHCT1G32
SINGLE 2-INPUT POSITIVE-OR GATE
SCLS320I – MARCH 1996 – REVISED JANUARY 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
FROM TO LOAD
TA = 25°C
PARAMETER
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX
MIN
MAX
UNIT
t
PLH
p
5 6.9 1 8
t
PHL
A or B
Y
C
L
=
15 pF
5 6.9 1 8
ns
t
PLH
p
5.5 7.9 1 9
t
PHL
A or B
Y
C
L
=
50 pF
5.5 7.9 1 9
ns
operating characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load, f = 1 MHz 11.5 pF
SN74AHCT1G32
SINGLE 2-INPUT POSITIVE-OR GATE
SCLS320I – MARCH 1996 – REVISED JANUARY 2000
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
50% V
CC
3 V
3 V
0 V
0 V
t
h
t
su
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Data Input
t
PLH
t
PHL
t
PHL
t
PLH
V
OH
V
OH
V
OL
V
OL
3 V
0 V
50% V
CC
50% V
CC
Input
Out-of-Phase
Output
In-Phase
Output
Timing Input
50% V
CC
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
Output
Control
Output
Waveform 1
S1 at V
CC
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
V
OL
V
OH
t
PZL
t
PZH
t
PLZ
t
PHZ
≈V
CC
0 V
50% V
CC
VOL + 0.3 V
50% V
CC
≈0 V
3 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
Open Drain
Open
V
CC
GND
V
CC
TEST S1
3 V
0 V
t
w
VOLTAGE WAVEFORMS
PULSE DURATION
Input
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
From Output
Under Test
C
L
(see Note A)
LOAD CIRCUIT FOR
3-STATE AND OPEN-DRAIN OUTPUTS
S1
V
CC
RL = 1 kΩ
GND
From Output
Under Test
C
L
(see Note A)
Test
Point
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
Open
VOH – 0.3 V
1.5 V 1.5 V
1.5 V
1.5 V 1.5 V
1.5 V 1.5 V1.5 V 1.5 V
Figure 1. Load Circuit and Voltage Waveforms
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Copyright 2000, Texas Instruments Incorporated
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