1

Standard Products

UT54ACS27/UT54ACTS27

Triple 3-Input NOR Gates

Datasheet

November 2010

www.aeroflex.com/logic

FEATURES

1.2μ CMOS

- Latchup immune

High speed

Low power consumption

Single 5 volt supply

Available QML Q or V processes

Flexible package

- 14-pin DIP

- 14-lead flatpack

UT54ACS27 - SMD 5962-96528

UT54ACTS27 - SMD 5962-96529

DESCRIPTION

The UT54ACS27 and the UT54ACTS27 are triple, three-input

NOR gates. The circuits perform the Boolean functions

Y = A+B+C or Y = A

⋅B⋅C in positive logic.

The devices are characterized over full military temperature

range of -55

°C to +125°C.

FUNCTION TABLE

LOGIC SYMBOL

PINOUTS

14-Pin DIP

Top View

14-Lead Flatpack

Top View

LOGIC DIAGRAM

INPUTS

OUTPUT

A

B

C

Y

H

X

X

L

X

H

X

L

X

X

H

L

L

L

L

H

Y1

(12)

(6)

Y2

Y3

(8)

(1)

A1

(2)

B1

(13)

C1

(3)

A2

(4)

B2

(5)

C2

(9)

A3

(10)

B3

Note:

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

Publication 617-12.

≥1

(11)

C3

1

2

3

4

5

7

6

14

13

12

11

10

8

9

A1

B1

A2

B2

C2

Y2

C1

Y1

C3

B3

A3

Y3

1

2

3

4

5

7

6

14

13

12

11

10

8

9

C1

Y1

C3

B3

A3

Y3

A1

B1

A2

B2

C2

Y2

Y1

A1

B1

C1

Y2

A2

B2

C2

Y3

A3

B3

C3