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74HC123N Datasheet(PDF) 9 Page - NXP Semiconductors

Part # 74HC123N
Description  Dual retriggerable monostable multivibrator with reset
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HC123N Datasheet(HTML) 9 Page - NXP Semiconductors

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74HC_HCT123
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 8 — 16 December 2011
9 of 25
NXP Semiconductors
74HC123; 74HCT123
Dual retriggerable monostable multivibrator with reset
trtrig
retrigger time
nA,nB; CEXT = 0 pF;
REXT = 5 k; VCC = 5.0 V;
see Figure 10
[3][4]
-110
-
-
-
-
-
ns
REXT
external timing
resistor
see Figure 7
VCC = 2.0 V
10
-
1000
-
-
-
-
k
VCC = 5.0 V
2
-
1000
-
-
-
-
k
CEXT
external timing
capacitor
VCC = 5.0 V; see Figure 7
[4]
--
-
-
-
-
-
pF
CPD
power
dissipation
capacitance
per monostable;
VI = GND to VCC
[5]
-54-
-
-
-
-
pF
74HCT123
tPHL
HIGH to LOW
propagation
delay
nRD, nA, nB to nQ or nQ;
CEXT = 0 pF; REXT =
5k
; see Figure 9
VCC = 4.5 V
-
30
51
-
64
-
77
ns
VCC = 5 V; CL =15pF
-
26
-
-
-
-
-
ns
nRD (reset) to nQ or nQ;
CEXT =0 pF;
REXT =5 k;
see Figure 9
VCC = 4.5 V
-
27
46
-
58
-
69
ns
VCC = 5 V; CL =15pF
-
23
-
-
-
-
-
ns
tPLH
LOW to HIGH
propagation
delay
nRD, nA, nB to nQ or nQ;
CEXT = 0 pF;
REXT =5 k;
see Figure 9
VCC = 4.5 V
-
28
51
-
64
-
77
ns
VCC = 5 V; CL =15pF
-
26
-
-
-
-
-
ns
nRD (reset) to nQ or nQ;
CEXT =0 pF; REXT =
5k
; see Figure 9
VCC = 4.5 V
-
23
46
-
58
-
69
ns
VCC = 5 V; CL =15pF
-
23
-
-
-
-
-
ns
tt
transition time
VCC = 4.5 V; see Figure 9
[1]
-
7
15
-
19
-
22
ns
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 12.
Symbol Parameter
Conditions
25
C
40 C to +85 C 40 C to +125 C Unit
Min
Typ
Max
Min
Max
Min
Max


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