LESHAN RADIO COMPANY, LTD.
Noninverting Buffer / CMOS Logic Level Shifter
with LSTTL–Compatible Inputs
MC74VHC1GT50
The MC74VHC1GT50 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 internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output.
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 MC74VHC1GT50 input structure provides protection when voltages up to 7 V are applied, regardless of the supply voltage. This
allows the MC74VHC1GT50 to be used to interface 5 V circuits to 3 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.
• High Speed: t PD = 3.5 ns (Typ) at V CC = 5 V
• Power Down Protection Provided on Inputs and Outputs
• Balanced Propagation Delays
• Low Power Dissipation: I CC = 2 mA (Max) at T A = 25°C
• TTL–Compatible Inputs: V IL = 0.8 V; V IH = 2.0 V
• Pin and Function Compatible with Other Standard Logic Families
• Chip Complexity: FETs = 104; Equivalent Gates = 26
• CMOS–Compatible Outputs: V OH > 0.8 V CC
V OL < 0.1 V CC @Load
;
MARKING DIAGRAMS
5
4
1
2
3
VLd
SC–70/SC–88A/SOT–353
DF SUFFIX
CASE 419A
Pin 1
d = Date Code
5
Figure 1. Pinout (Top View)
4
VLd
1
2
3
Figure 2. Logic Symbol
SOT–23/TSOP–5/SC–59
DT SUFFIX
CASE 483
Pin 1
d = Date Code
PIN ASSIGNMENT
FUNCTION TABLE
1
2
3
4
5
NC
IN A
Inputs
Output
A
L
Y
L
GND
OUT Y
V CC
H
H
ORDERING INFORMATION
See detailed ordering and shipping information in the
package dimensions section on page 4 of this data sheet.
VHT50–1/4
LRC [ LESHAN RADIO COMPANY ]
