74HCT123D NXP Semiconductors, 74HCT123D Datasheet - Page 20

• Manufacturer Part Number: 74HCT123D
• Description: IC, MONO MULTIVIBRATOR, 30NS, SOIC-16
• Manufacturer: NXP Semiconductors

Specifications of 74HCT123D

• Multivibrator Type: Retriggerable Monostable
• Output Current: 4mA
• Logic Case Style: SOIC
• No. Of Pins: 16
• Supply Voltage Range: 4.5V To 5.5V
• Propagation Delay: 30ns
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Philips Semiconductors
74HC_HCT123_4
Product data sheet
12.3 Power-down considerations
A large capacitor C
the energy stored in this capacitor. When a system containing this device is
powered-down or a rapid decrease of V
damage, due to the capacitor discharging through the input protection diodes. To avoid
this possibility, use a damping diode (D
diode able to withstand large current surges and connect as shown in
Fig 15. Power-down protection circuit
EXT
may cause problems when powering-down the monostable due to
Rev. 04 — 16 June 2006
A
B
1 (9)
2 (10)
Dual retriggerable monostable multivibrator with reset
123
GND
8
EXT
CC
) preferably a germanium or Schottky type
to zero occurs, the monostable may sustain
nCEXT
14 (6)
C EXT
nRD
74HC123; 74HCT123
3 (11)
15 (7)
nREXT/CEXT
001aaa614
D EXT
13 (5)
4 (12)
R EXT
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Q
Q
V
CC
Figure
15.
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