74HC4538 Philips, 74HC4538 Datasheet - Page 3

• Manufacturer Part Number: 74HC4538
• Description: Dual retriggerable precision monostable multivibrator
• Manufacturer: Philips

Philips Semiconductors
PIN DESCRIPTION
September 1993
PIN NO.
1, 15
2, 14
3, 13
4, 12
5, 11
6, 10
7, 9
8
16
Dual retriggerable precision monostable
multivibrator
Fig.1 Pin configuration.
SYMBOL
1C
1RC
1R
1A
1A
1Q, 2Q
1Q, 2Q
GND
V
CC
1
0
TC
D
, 2A
, 2A
, 2R
TC
, 2C
, 2RC
1
0
D
TC
TC
NAME AND FUNCTION
external capacitor connections
external resistor/capacitor connections
direct reset inputs (active LOW)
trigger inputs (LOW-to-HIGH, edge-triggered)
trigger inputs (HIGH-to-LOW, edge-triggered)
pulse outputs
complementary pulse outputs
ground (0 V)
positive supply voltage
Fig.2 Logic symbol.
3
Fig.3 IEC logic symbol.
74HC/HCT4538
Product specification