74LS47 View Datasheet(PDF) - ON Semiconductor

Part Name

Description

Manufacturer

74LS47

BCD to 7-Segment Decoder / Driver

ON Semiconductor 

SN74LS47

CONNECTION DIAGRAM DIP (TOP VIEW)

VCC f

g

a

bc

d

e

16 15 14 13 12 11 10 9

1 2 3 4 56

B C LT BI / RBO RBI D

78

A GND

PIN NAMES

A, B, C, D

RBI

LT

BI/RBO

a, to g

BCD Inputs

Ripple–Blanking Input

Lamp–Test Input

Blanking Input or

Ripple–Blanking Output

Outputs

LOADING (Note a)

HIGH

LOW

0.5 U.L.

0.5 U.L.

0.5 U.L.

0.5 U.L.

1.2 U.L.

Open–Collector

0.25 U.L.

0.25 U.L.

0.25 U.L.

0.75 U.L.

2.0 U.L.

15 U.L.

NOTES:

a) 1 Unit Load (U.L.) = 40 mA HIGH, 1.6 mA LOW.

b) Output current measured at VOUT = 0.5 V

b) The Output LOW drive factor is 15 U.L. for Commercial (74) Temperature Ranges.

LOGIC SYMBOL

71 2 63 5

A B C D LT RBI

BI/

a b c d e f g RBO

13 12 11 10 9 15 14 4

VCC = PIN 16

GND = PIN 8

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