HD74LS247FPEL 查看數據表（PDF） - Renesas Electronics

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比赛名单

HD74LS247FPEL

BCD-to-Seven-Segment Decoder / Driver (with three-state outputs)

Renesas Electronics 

HD74LS247

Block Diagram

A

B

Inputs

C

D

BI/BRO

Blanking Input or

Ripple Blanking

Output

Lamp Test

Input

RBI

Ripple Blanking

Input

a

b

c

d Outputs

e

f

g

Absolute Maximum Ratings

Item

Symbol

Ratings

Supply voltage

VCC

7

Input voltage

VIN

7

Output current (tw ≤ 1ms, duty cycle ≤ 10%)

IO (peak)

200

Output current (off-state)

IO (off)

1

Operating temperature

Topr

–20 to +75

Power dissipation

PT

400

Storage temperature

Tstg

–65 to +150

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

Unit

V

V

mA

mA

°C

mW

°C

Rev.3.00, Jul.15.2005, page 3 of 7

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