Copyright © 2016, Texas Instruments Incorporated

10

SN54HC08, SN74HC08

SCLS081G – DECEMBER 1982 – REVISED JUNE 2016

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Product Folder Links: SN54HC08 SN74HC08

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Copyright © 1982–2016, Texas Instruments Incorporated

9 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

The SNx4HC08 is used to drive CMOS device and used for implementing AND logic. The HC family is low power

with the SNx4HC08 having 20-µA maximum supply current. The supply for SN74HC08 is wide, accepting 2-V to

concern.

9.2 Typical Application

Figure 4. Typical Application Diagram

9.2.1 Design Requirements

This device uses CMOS technology and has balanced output drive. Take care to avoid bus contention because it

can drive currents that would exceed maximum limits. The high drive also creates fast edges into light loads, so

consider routing and load conditions to prevent ringing.

9.2.2 Detailed Design Procedure

1. Recommended input conditions

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Rise time and fall time specs: See (

Δt/ΔV) in Recommended Operating Conditions.

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2. Absolute Maximum Output Conditions

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Load currents must not exceed 25 mA per output and 50 mA total for the part

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