下载
© Semiconductor Components Industries, LLC, 2005
August, 2005 − Rev. 11
1 Publication Order Number:
MC74VHC1GT125/D
MC74VHC1GT125
Noninverting Buffer /
CMOS Logic Level Shifter
with LSTTL−Compatible Inputs
The MC74VHC1GT125 is a single gate noninverting buffer
fabricated with silicon gate CMOS technology. It achieves high speed
operation similar to equivalent Bipolar Schottky TTL while
maintaining CMOS low power dissipation.
The MC74VHC1GT125 requires the 3−state control input (OE) to
be set High to place the output into the high impedance state.
The device input is compatible with TTL−type input thresholds and
the output has a full 5.0 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 MC74VHC1GT125 input structure provides protection when
voltages up to 7.0 V are applied, regardless of the supply voltage. This
allows the MC74VHC1GT125 to be used to interface 5.0 V circuits to
3.0 V circuits. The output structures also provide protection when
V
CC
= 0 V. These input and output structures help prevent device
destruction caused by supply voltage − input/output voltage mismatch,
battery backup, hot insertion, etc.
Features
• High Speed: t
PD
= 3.5 ns (Typ) at V
CC
= 5 V
• Low Power Dissipation: I
CC
= 1 mA (Max) at T
A
= 25°C
• TTL−Compatible Inputs: V
IL
= 0.8 V; V
IH
= 2.0 V
• CMOS−Compatible Outputs: V
OH
> 0.8 V
CC
; V
OL
< 0.1 V
CC
@Load
• Power Down Protection Provided on Inputs and Outputs
• Balanced Propagation Delays
• Pin and Function Compatible with Other Standard Logic Families
• Chip Complexity: FETs = 62; Equivalent Gates = 16
• Pb−Free Packages are Available
Figure 1. Pinout (Top View)
IN A
OUT Y
V
CC
OE
IN A
OUT YGND
OE
Figure 2. Logic Symbol
1
2
3
4
5
PIN ASSIGNMENT
1
2
3 GND
OE
IN A
4
5V
CC
OUT Y
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
ORDERING INFORMATION
FUNCTION TABLE
L
H
X
A Input Y Output
L
H
Z
OE Input
L
L
H
http://onsemi.com
SC−88A/SOT−353/SC−70
DF SUFFIX
CASE 419A
TSOP−5/SOT−23/SC−59
DT SUFFIX
CASE 483
MARKING
DIAGRAMS
1
5
1
5
1
5
W1 AYW G
G
W1 M G
W1 = Device Code
M = Date Code*
A = Assembly Location
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
*Date Code orientation and/or position ma
y
vary depending upon manufacturing location
.
1
5
M
G
页面指南
