Rev.3.01, May 10, 2006, page 1 of 6

HD74LS47

BCD-to-Seven-Segment Decoder / Driver (with 15 V Outputs)

REJ03D0410-0301

Rev.3.01

May 10, 2006

HD74LS47 features active-low outputs designed for driving incandescent indicators directly. This device has full

ripple-blanking input / output controls and a lamp test. Display patterns for BCD input counts above 9 are unique

symbols to authenticate input conditions. This circuit incorporates automatic leading and / or trailing-edge zero-

blanking control (RBI and RBO). Lamp test (LT) of these types may be performed at any time when the BI / RBO

node is at a high level. It contains an overriding blanking input (BI) which can be used to control the lamp intensity of

pulsing or to inhibit the outputs. Inputs and outputs are entirely compatible for use with TTL or DTL logic outputs.

Features

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74LS47P

DILP-16 pin

PRDP0016AE-B

(DP-16FV)

P

—

HD74LS47FPEL

SOP-16 pin (JEITA)

PRSP0016DH-B

(FP-16DAV)

FP

EL (2,000 pcs/reel)

Note:

Please consult the sales office for the above package availability.

Pin Arrangement

(Top view)

GND

B

C

LT

BI/RBO

RBI

D

A

f

g

b

a

c

d

e

15

16

1

2

3

4

5

6

7

14

8

9

10

11

12

13

Outputs

Inputs

Inputs

B

C

D

A

RBI

BI/RBO

LT

f

g

d

e

c

b

a