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CD74HCT21
  • CD74HCT21
  • CD74HCT21
  • CD74HCT21

CD74HCT21

ACTIVE

2-ch 4-input 4.5-V to 5.5-V AND gate with TTL-compatible inputs

Texas Instruments CD74HCT21 Product Info

1 April 2026 1

Parameters

Technology family

HCT

Supply voltage (min) (V)

4.5

Supply voltage (max) (V)

5.5

Number of channels

2

Inputs per channel

4

IOL (max) (mA)

4

IOH (max) (mA)

-4

Input type

TTL-Compatible CMOS

Output type

Push-Pull

Features

High speed (tpd 10- 50ns)

Data rate (max) (Mbps)

25

Rating

Catalog

Operating temperature range (°C)

-55 to 125

Package

PDIP (N)-14-181.42 mm² 19.3 x 9.4

Features

  • LSTTL input logic compatible
    • VIL(max) = 0.8 V, VIH(min) = 2 V
  • CMOS input logic compatible
    • II ≤ 1 µA at VOL, VOH
  • Buffered inputs
  • 4.5 V to 5.5 V operation
  • Wide operating temperature range: -55°C to +125°C
  • Supports fanout up to 10 LSTTL loads
  • Significant power reduction compared to LSTTL logic ICs
  • LSTTL input logic compatible
    • VIL(max) = 0.8 V, VIH(min) = 2 V
  • CMOS input logic compatible
    • II ≤ 1 µA at VOL, VOH
  • Buffered inputs
  • 4.5 V to 5.5 V operation
  • Wide operating temperature range: -55°C to +125°C
  • Supports fanout up to 10 LSTTL loads
  • Significant power reduction compared to LSTTL logic ICs

Description

This device contains two independent 4-input AND gates. Each gate performs the Boolean function Y = A ● B ● C ● D in positive logic.

This device contains two independent 4-input AND gates. Each gate performs the Boolean function Y = A ● B ● C ● D in positive logic.

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