SN74HCS126 Quadruple Buffer with 3-State Outputs and Schmitt-Trigger Inputs

1 Features

• Wide operating voltage range: 2 V to 6 V

• Schmitt-trigger inputs allow for slow or noisy input

signals

• Low power consumption

– Typical ICC of 100 nA

– Typical input leakage current of ±100 nA

• ±7.8-mA output drive at 6 V

• Extended ambient temperature range: –40°C to

+125°C, TA

2 Applications

• Enable or disable a digital signal

• Controlling an indicator LED

• Debounce a switch

• Eliminate slow or noisy input signals

3 Description

This device contains four independent buffer with 3-

state outputs and Schmitt-trigger inputs. Each gate

performs the Boolean function Y = A in positive logic.

The outputs can be put into a Hi-Z state by applying a

Low on the OE pin

Package Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

SN74HCS126PW

TSSOP (14)

5.00 mm × 4.40 mm

SN74HCS126D

SOIC (14)

9.90 mm × 3.90 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

Input Voltage

Schmitt-trigger

CMOS Input

Response

Waveforms

Standard

CMOS Input

Response

Waveforms

Input Voltage

Input Voltage

Time

Time

Input Voltage

Waveforms

Low Power

Noise Rejection

Supports Slow Inputs

Time

Time

Time

Time

Benefits of Schmitt-trigger inputs

SN74HCS126

SCLS798B – JUNE 2020 – REVISED MAY 2023

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.