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CD74HC123 Datasheet(PDF) 6 Page - Texas Instruments

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Part No. CD74HC123
Description  High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Resets
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD74HC123 Datasheet(HTML) 6 Page - Texas Instruments

   
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6
Switching Specifications CL = 50pF, Input tr, tf = 6ns, RX = 10KΩ, CX = 0
PARAMETER
SYMBOL
TEST
CONDITIONS
VCC (V)
25oC
-40oC TO
85oC
-55oC TO
125oC
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HC TYPES
Trigger Propagation Delay
tPHL
CL = 50pF
A, B, R to Q
2
-
-
300
-
375
-
450
ns
4.5
-
-
60
-
75
-
90
ns
CL = 15pF
5
-
25
-
-
-
-
-
ns
CL = 50pF
6
-
-
51
-
64
-
76
ns
A, B, R to QtPHL
CL = 50pF
2
-
-
320
-
400
-
480
ns
4.5
-
-
64
-
80
-
96
ns
CL = 15pF
5
-
26
-
-
-
-
-
ns
CL = 50pF
6
-
-
54
-
68
-
82
ns
Reset Propagation Delay
tPHL, tPLH
CL = 50pF
2
-
-
215
-
270
-
325
ns
R to Q or Q
4.5
-
-
43
-
54
-
65
ns
6
-
-
37
-
46
-
55
ns
Output Transition Time
tTHL, tTLH
CL = 50pF
2
-
-
75
-
95
-
110
ns
4.5
-
-
15
-
19
-
22
ns
6
-
-
13
-
16
-
19
ns
Output Pulse Width
-
-
5
RX = 10KΩ, CX = 10pF
-
45
-
-
-
-
-
µs
Pulse Width Match Between
Circuits In the Same Package
-
-
5
RX = 10KΩ, CX = 10pF
-
±2-
-
-
-
-
%
Power Dissipation Capacitance
CPD
CL = 15pF
5
-
-
-
-
-
-
-
pF
Input Capacitance
CIN
CL = 50pF
-
10
-
10
-
10
-
10
pF
NOTES:
5. CPD is used to determine the dynamic power consumption, per multivibrator.
6. PD =(CPD +CX)VCC
2 f
i ∑(CL VCC
2 f
O) where fi = input frequency, fO = Output Frequency, CL = Output Load Capacitance,
CX = External Capacitance VCC = Supply Voltage assuming fi « I
t
W
------
CD74HC123, CD74HCT123, CD74HC423, CD74HCT423


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