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PDF ( 数据手册 , 数据表 ) 74AHC123A

零件编号 74AHC123A
描述 Dual retriggerable monostable multivibrator with reset
制造商 NXP Semiconductors
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74AHC123A 数据手册, 描述, 功能
INTEGRATED CIRCUITS
DATA SHEET
74AHC123A; 74AHCT123A
Dual retriggerable monostable
multivibrator with reset
Product specification
File under Integrated Circuits, IC06
2000 Mar 15







74AHC123A pdf, 数据表
Philips Semiconductors
Dual retriggerable monostable multivibrator
with reset
Product specification
74AHC123A;
74AHCT123A
handbook, halfpage
VCC
REXT
CEXT
to nCEXT
(pin 14 or 6)
to nREXT/CEXT
(pin 15 or 7)
MNA519
Fig.6 Timing component connections.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
VCC
VI
VO
Tamb
tr, tf
REXT
CEXT
PARAMETER
DC supply voltage
input voltage
output voltage
operating ambient
temperature
input rise and fall
time ratios
external timing
resistor
external timing
capacitor
CONDITIONS
see DC and AC
characteristics per device
VCC = 3.3 ±0.3 V
VCC = 5 ±0.5 V
VCC = 2 V
VCC > 3 V
74AHC
74AHCT
UNIT
MIN. TYP. MAX. MIN. TYP. MAX.
2.0 5.0 5.5 4.5 5.0 5.5 V
0 5.5 0 5.5 V
0 VCC 0 VCC V
40 +25 +85 40 +25 +85 °C
40 +25 +125 40 +25 +125 °C
− − 100 − − − ns/V
− − 20 − − 20 ns/V
5 − − 5 − − k
1 − − 1 − − k
no limits
pF
2000 Mar 15
8







74AHC123A equivalent, schematic
Philips Semiconductors
Dual retriggerable monostable multivibrator
with reset
Product specification
74AHC123A;
74AHCT123A
SYMBOL PARAMETER
TEST CONDITIONS
WAVEFORMS
CL
Tamb (°C)
25 40 to +85 40 to +125 UNIT
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
VCC = 4.5 to 5.5 V; note 1
trt retrigger time;
nA to nB
CEXT = 100 pF;
REXT = 1 k; see
Figs 8, 9 and 10
CEXT = 0.01 µF;
REXT = 1 k; see
Figs 8, 9 and 10
50 pF
60
1.5
−−
−−
−−
−−
ns
µs
Notes
1. Typical values are measured at VCC = 5.0 V and Tamb = 25 °C.
2. For CEXT 10 nF the typical value of the pulse width tW (µs) = REXT (k) × CEXT (nF).
2000 Mar 15
16










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