Schmitt-Trigger Inverter /
CMOS Logic Level Shifter
with LSTTL–Compatible Inputs
The MC74VHC1GT14 is a single gate CMOS Schmitt–trigger
inverter 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 5V 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
3.0V CMOS logic to 5.0V CMOS Logic or from 1.8V CMOS logic to
3.0V CMOS Logic while operating at the high–voltage power supply.
The MC74VHC1GT14 input structure provides protection when
voltages up to 7V are applied, regardless of the supply voltage. This
allows the MC74VHC1GT14 to be used to interface 5V circuits to 3V
circuits. The output structures also provide protection when VCC = 0V.
These input and output structures help prevent device destruction
caused by supply voltage – input/output voltage mismatch, battery
backup, hot insertion, etc. The MC74VHC1GT14 can be used to
enhance noise immunity or to square up slowly changing waveforms.
• High Speed: tPD = 4.5ns (Typ) at VCC = 5V
• Low Power Dissipation: ICC = 2µA (Max) at TA = 25°C
• TTL–Compatible Inputs: VIL = 0.8V; VIH = 2.0V
• CMOS–Compatible Outputs: VOH > 0.8VCC; VOL < 0.1VCC @Load
• Power Down Protection Provided on Inputs and Outputs
• Balanced Propagation Delays
• Pin and Function Compatible with Other Standard Logic Families
• Latchup Performance Exceeds 300mA
SC–88A / SOT–353
d = Date Code
2 IN A
4 OUT Y
IN A 2
4 OUT Y
Figure 1. 5–Lead SOT–353 Pinout (Top View)
IN A OUT Y
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
© Semiconductor Components Industries, LLC, 1999
November, 1999 – Rev. 1
Publication Order Number: