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74HC123 Datasheet(PDF) 3 Page - NXP Semiconductors

Part No. 74HC123
Description  Dual retriggerable monostable multivibrator with reset
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74HC123 Datasheet(HTML) 3 Page - NXP Semiconductors

 
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1998 Jul 08
3
Philips Semiconductors
Product specification
Dual retriggerable monostable
multivibrator with reset
74HC/HCT123
ORDERING INFORMATION
PIN DESCRIPTION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
74HC123N;
74HCT123N
DIP16
plastic dual in-line package; 16 leads (300 mil); long body
SOT38-1
74HC123D;
74HCT123D
SO16
plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
74HC123DB;
74HCT123DB
SSOP16
plastic shrink small outline package; 16 leads; body width 5.3 mm
SOT338-1
74HC123PW;
74HCT123PW
TSSOP16
plastic thin shrink small outline package; 16 leads; body width 4.4 mm
SOT403-1
PIN NO.
SYMBOL
NAME AND FUNCTION
1, 9
1A, 2A
trigger inputs (negative-edge triggered)
2, 10
1B, 2B
trigger inputs (positive-edge triggered)
3, 11
1RD, 2RD
direct reset LOW and trigger action at positive edge
4, 12
1Q, 2Q
outputs (active LOW)
72REXT/CEXT
external resistor/capacitor connection
8
GND
ground (0 V)
13, 5
1Q, 2Q
outputs (active HIGH)
14, 6
1CEXT, 2CEXT
external capacitor connection
15
1REXT/CEXT
external resistor/capacitor connection
16
VCC
positive supply voltage
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.


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