Texas Instruments CD74HCT541E Bedienungsanleitung

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CDx4HC(T)541 High-Speed CMOS Logic Octal Buffer and Line Drivers, Three-State

1 Features

•’HC540, CD74HCT540: inverting

•’HC541, ’HCT541: non-inverting

•Buffered inputs

•Three-state outputs

•Bus line driving capability

•Typical propagation delay = 9 ns at VCC = 5 V,

CL = 15 pF, TA = 25℃

•Fanout (over temperature range)

–Standard outputs: 10 LSTTL loads

–Bus driver outputs: 15 LSTTL loads

•Wide operating temperature range: –55 to 125℃ ℃

•Balanced propagation delay and transition times

•Significant power reduction compared to LSTTL

Logic ICs

•HC types

–2 V to 6 V operation

–High noise immunity: NIL = 30%, NIH = 30% of

VCC at VCC = 5 V

•HCT types

–4.5 V to 5.5 V operation

–Direct LSTTL input logic compatibility,

VIL = 0.8 V (max), VIH = 2 V (min)

–CMOS input compatibility, II ≤ 1 μA at VOL, VOH

2 Description

The ’HC540 and CD74HCT540 are Inverting Octal

Buffers and Line Drivers with Three-State Outputs

and the capability to drive 15 LSTTL loads.

The ’HC541 and ’HCT541 are Noninverting Octal

Buffers and Line Drivers with Three-State Outputs

that can drive 15 LSTTL loads. The Output Enables

(OE1) and (OE2) control the Three-State Outputs. If

either OE1 or OE2 is HIGH the outputs will be in the

high impedance state. For data output OE1 and OE2

both must be LOW.

Device Information

PART NUMBERPACKAGE(1) BODY SIZE (NOM)

CD74HC540MSOIC (20)12.80 mm × 7.50 mm

CD74HC540EPDIP (20)25.40 mm × 6.35 mm

CD54HC540F3ACDIP (20)26.92 mm × 6.92 mm

CD74HC541MSOIC (20)12.80 mm × 7.50 mm

CD74HC541EPDIP (20)25.40 mm × 6.35 mm

CD54HC541FCDIP (20)26.92 mm × 6.92 mm

CD74HCT540MSOIC (20)12.80 mm × 7.50 mm

CD74HCT540EPDIP (20)25.40 mm × 6.35 mm

CD74HCT541MSOIC (20)12.80 mm × 7.50 mm

CD74HCT541EPDIP (20)25.40 mm × 6.35 mm

CD54HCT541FCDIP (20)26.92 mm × 6.92 mm

CD74HCT541PWTSSOP (20)6.50 mm × 4.40 mm

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

Functional Diagram

CD54HC540, CD74HC540, CD54HC541, CD74HC541

CD74HCT540, CD54HCT541, CD74HCT541

SCHS189D – JANUARY 1998 – REVISED JANUARY 2022

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. PRODUCTION DATA.

Produktspezifikationen