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參數(shù)資料
| 型號： | HC123 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Bridge Rectifier; Repetitive Reverse Voltage Max, Vrrm:1000V; Package/Case:DO-27A; Current Rating:3A; Forward Current:3A; Forward Voltage:1.2V; Mounting Type:Through Hole; Terminal Type:Axial Leaded |
| 中文描述： | 雙Retriggerable（與Clear單穩(wěn)態(tài)多頻振蕩器） |
| 文件頁數(shù)： | 1/14頁 |
| 文件大小： | 291K |
| 代理商： | HC123 |
M54HC123/123A
M74HC123/123A
October 1993
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR
.
HIGH SPEED
t
PD
= 25 ns(TYP) at V
CC
= 5V
.
LOWPOWER DISSIPATION
STANDBYSTATEI
CC
=4
μ
A(MAX.) ATT
A
=25
°
C
ACTIVESTATE I
CC
=200
μ
A (TYP.) AT V
CC
=5V
.
HIGH NOISE IMMUNITY
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
.
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
I
OH
= I
OL
= 4 mA (MIN.)
.
BALANCEDPROPAGATION DELAYS
t
PLH
= t
PHL
.
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2 V TO6 V
.
WIDE OUTPUTPULSE WIDTHRANGE
t
WOUT
= 120 ns
～
60 s OVER AT V
CC
= 4.5 V
.
PIN AND FUNCTION COMPATIBLE WITH
54/74LS123
B1R
(Plastic Package)
ORDER CODES :
M54HCXXXF1R
M74HCXXXB1R
M74HCXXXM1R
M74HCXXXC1R
F1R
(CeramicPackage)
M1R
(MicroPackage)
C1R
(Chip Carrier)
PIN CONNECTIONS
(top view)
NC =
No Internal
Connection
The M54/74HC123 is a high speed CMOS MONO-
STABLE multivibrator fabricated with silicon gate
C
2
MOS technology. It achieves the high speed
operation similar to equivalent LSTTL while main-
tainingthe CMOS low powerdissipation. There are
two trigger inputs, A INPUT (negative edge) and 8
INPUT (positive edge). These inputs are valid for
slowrising/falling signals, (tr= tf =Isec). The device
may also be triggered by using the CLR input (posi-
tive-edge) because of the Schmitt-trigger input ;
after triggering the output maintains the MONO-
STABLEstatefor thetime period determined by the
external resistor Rx and capacitor Cx. When Cx
≥
10nF and Rx
≥
10K
, the output pulse width value
is approssimatively given by theformula: t
w(out)
= K
Cx
Rx.
Two different pulse width constant are available:
K
0.45 for HC123
K
1 for HC123A.
Taking CLR low breaks this MONOSTABLE
STATE. If the next trigger pulse occurs during the
MONOSTABLEperiod itmakes theMONOSTABLE
period longer. Limit for values of Cx and Rx :
Cx : NO LIMIT
Rx : V
CC
< 3.0 V 5 K
to 1 M
V
CC
≥
3.0 V 1 K
to 1 M
All inputs are equipped with protection circuits
DESCRIPTION
1/14
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PDF描述 |
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| HC123 | Small Signal Bipolar Transistor; Collector Emitter Voltage, Vceo:90V; Transistor Polarity:N Channel; Power Dissipation:40W; C-E Breakdown Voltage:90V; DC Current Gain Min (hfe):15; Collector Current:4A; Package/Case:TO-220 |
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| HC123 | Dual Retriggerable Monostable Multivibrator |
| HC123 | Standard Recovery Rectifier; Repetitive Reverse Voltage Max, Vrrm:1000V; Forward Current Avg Rectified, IF(AV):2A; Non Repetitive Forward Surge Current Max, Ifsm:70A; Forward Voltage Max, VF:1.1V; Package/Case:DO-15 |
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