MC74VHC1GT32
2-Input OR Gate/CMOS
Logic Level Shifter
The MC74VHC1GT32 is an advanced high speed CMOS 2–input OR
gate fabricated with silicon gate CMOS technology. It achieves high speed
operation similar to equivalent Bipolar Schottky TTL while maintaining
CMOS low power dissipation.
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The internal circuit is composed of three stages, including a buffer
output which provides high noise immunity and stable output.
MARKING
The device input is compatible with TTL–type input thresholds and the
output has a full 5 V CMOS level output swing. The input protection
circuitry on this device allows overvoltage tolerance on the input,
allowing the device to be used as a logic–level translator from 3.0 V
CMOS logic to 5.0 V CMOS Logic or from 1.8 V CMOS logic to 3.0 V
CMOS Logic while operating at the high–voltage power supply.
The MC74VHC1GT32 input structure provides protection when
voltages up to 7 V are applied, regardless of the supply voltage. This
allows the MC74VHC1GT32 to be used to interface 5 V circuits to 3 V
DIAGRAMS
SC–88A / SOT–353/SC–70
DF SUFFIX
d
VN
CASE 419A
Pin 1
d = Date Code
circuits. The output structures also provide protection when V
= 0 V.
CC
These input and output structures help prevent device destruction caused
by supply voltage – input/output voltage mismatch, battery backup, hot
insertion, etc.
TSOP–5/SOT–23/SC–59
DT SUFFIX
d
VN
CASE 483
• High Speed: t
= 3.5 ns (Typ) at V
= 5 V
PD
• Low Power Dissipation: I
CC
= 2 µA (Max) at T = 25°C
Pin 1
CC
A
d = Date Code
• TTL–Compatible Inputs: V = 0.8 V; V = 2.0 V
IL
IH
> 0.8 V ; V
• CMOS–Compatible Outputs: V
< 0.1 V @Load
OH
CC OL CC
• Power Down Protection Provided on Inputs and Outputs
• Balanced Propagation Delays
• Pin and Function Compatible with Other Standard Logic Families
• Chip Complexity: FETs = 65; Equivalent Gates = 15
PIN ASSIGNMENT
1
2
3
4
5
IN B
IN A
GND
OUT Y
V
CC
FUNCTION TABLE
5
V
1
2
IN B
IN A
GND
CC
Inputs
Output
Y
A
B
L
L
L
H
L
L
H
H
H
H
H
4
OUT Y
3
H
Figure 1. Pinout (Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
IN A
IN B
≥ 1
OUT Y
Figure 2. Logic Symbol
Semiconductor Components Industries, LLC, 2001
1
Publication Order Number:
November, 2001 – Rev. 4
MC74VHC1GT32/D