1

Standard Products

UT54ACS540/UT54ACTS540

Octal Buffers & Line Drivers, Inverted Three-State Outputs

Datasheet

November 2010

www.aeroflex.com/logic

FEATURES

Three-state outputs drive bus lines or buffer memory address

registers

1.2μ CMOS

- Latchup immune

High speed

Low power consumption

Single 5 volt supply

Available QML Q or V processes

Flexible package

- 20-pin DIP

- 20-lead flatpack

UT54ACS540 - SMD 5962-96592

UT54ACTS540 - SMD 5962-96593

DESCRIPTION

The UT54ACS540 and the UT54ACTS540 are inverting octal

buffers and line drivers which improve the performance and

density of three-state memory address drivers, clock drivers, and

bus-oriented receivers and transmitters.

The devices are characterized over full military temperature

range of -55

°C to +125°C.

FUNCTION TABLE

LOGIC SYMBOL

PINOUTS

20-Pin DIP

Top View

20-Lead Flatpack

Top View

INPUTS

OUTPUT

1G

2G

An

Yn

L

L

L

H

L

L

H

L

H

X

X

Z

X

H

X

Z

(1)

EN

(2)

A1

(3)

A2

(4)

(18)

Y1

(16)

(17) Y2

Note:

1. Logic symbol in accordance with ANSI/IEEE Std 91-1984 and IEC

Publication 617-12.

A3

(5)

A4

(6)

A5

(7)

A6

Y3

(13) Y6

(14) Y5

(15)

Y4

(8)

A7

(9)

A8

(11) Y8

(12) Y7

(19)

&

1G

2G

1G

A1

A2

A3

A4

A5

A6

2G

Y1

Y2

Y3

Y5

A7

Y6

Y4

A8

Y7

Y8

120

219

318

417

516

615

714

813

912

10

11

1G

A1

A2

A3

A4

A5

A6

2G

Y1

Y2

Y3

Y5

A7

Y6

Y4

A8

Y7

Y8

120

219

318

417

516

615

714

813

912

10

11