HD74LS47

Rev.3.01, May 10, 2006, page 3 of 6

Block Diagram

Blanking Input or

Ripple Blanking

Output (BI/RBO)

Lamp Test

Input (LT)

Ripple Blanking

Input (RBI)

Outputs

Inputs

A

B

C

D

a

b

c

d

e

f

g

Absolute Maximum Ratings

Item

Symbol

Ratings

Unit

Supply voltage

7

V

Input voltage

7

V

Output current

(tw

≤ 1ms,duty cycle ≤ 10%)

200

mA

Output current (off)

1

mA

Power dissipation

400

mW

Operating temperature

Tupr

–20 to +75

°C

Storage temperature

Tstg

–65 to +150

°C

Note:

Voltage value, unless otherwise noted, are with respect to network ground terminal.