SN74HC21

ACTIVE

Dual 4-Input Positive-AND Gates

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Product details

Parameters

Technology Family HC VCC (Min) (V) 2 VCC (Max) (V) 6 Channels (#) 2 Inputs per channel 4 IOL (Max) (mA) 5.2 IOH (Max) (mA) -5.2 Input type Standard CMOS Output type Push-Pull Features High Speed (tpd 10-50ns) Data rate (Max) (Mbps) 28 Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other AND gate

Package | Pins | Size

PDIP (N) 14 181 mm² 19.3 x 9.4 SOIC (D) 14 52 mm² 8.65 x 6 SOP (NS) 14 80 mm² 10.2 x 7.8 TSSOP (PW) 14 32 mm² 5 x 6.4 open-in-new Find other AND gate

Features

  • Wide Operating Voltage Range of 2 V to 6 V
  • Outputs Can Drive Up To 10 LSTTL Loads
  • Low Power Consumption, 20-µA Max ICC
  • Typical tpd = 11 ns
  • ±4-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max

open-in-new Find other AND gate

Description

These devices contain two independent 4-input AND gates. They perform the Boolean function Y = A • B • C • D or Y = (A\ + B\ + C\ + D\)\ in positive logic.

open-in-new Find other AND gate
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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet SN54HC21, SN74HC21 datasheet (Rev. E) Aug. 06, 2003
Technical articles How to keep your motor running safely Jun. 04, 2020
Selection guide Logic Guide (Rev. AB) Jun. 12, 2017
Application note Implications of Slow or Floating CMOS Inputs (Rev. D) Jun. 23, 2016
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
User guide LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
User guide Signal Switch Data Book (Rev. A) Nov. 14, 2003
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
Application note TI IBIS File Creation, Validation, and Distribution Processes Aug. 29, 2002
Application note CMOS Power Consumption and CPD Calculation (Rev. B) Jun. 01, 1997
Application note Designing With Logic (Rev. C) Jun. 01, 1997
Application note Input and Output Characteristics of Digital Integrated Circuits Oct. 01, 1996
Application note Live Insertion Oct. 01, 1996
Application note SN54/74HCT CMOS Logic Family Applications and Restrictions May 01, 1996
Application note Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc Apr. 01, 1996

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
10
Description
This EVM is designed to support any logic device that has a D, DW, DB, NS, PW, P, N, or DGV package in a 14 to 24 pin count.
Features
  • Board design allows for versatility in evaluation
  • Supports a wide-range of logic devices

Reference designs

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CAD/CAE symbols

Package Pins Download
PDIP (N) 14 View options
SO (NS) 14 View options
SOIC (D) 14 View options
TSSOP (PW) 14 View options

Ordering & quality

Information included:
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  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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