7447 Просмотр технического описания (PDF) - ON Semiconductor
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7447 Datasheet PDF : 8 Pages
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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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