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参数资料
| 型号： | M54HC423C1R |
| 厂商： | 意法半导体 |
| 英文描述： | Single Nanopower Push-Pull Output Comparator 5-SOT-23 -40 to 125 |
| 中文描述： | 双RETRIGGERABLE单稳态触发器 |
| 文件页数： | 4/14页 |
| 文件大小： | 290K |
| 代理商： | M54HC423C1R |
FUNCTIONAL DESCRIPTION (continued)
RE-TRIGGERED OPERATION
When a second trigger pulse follows the first its
effect will depend onthestate of the multivibrator. If
the capacitor Cx is being charged the voltagelevel
of R/C external falls to Vrefl again and Q remains
high i.e. the retrigger pulse arrives in a time shorter
than the period Rx
Cx seconds, the capacitor
charging time constant. If the second trigger pulse
is very closeto the initialtrigger pulse itisineffective
; i.e. thesecond triggermust arrive in the capacitor
discharge cycle to be ineffective; Hence the
minimum time for a second trigger to be effective
depends on V
CC
and Cx.
RESETOPERATION
CL is normally high. If CL is low, the trigger is not
effective because Q output goes low and trigger
control flip-flop is reset.
Also transistor Op is turned on and Cx is charged
quickyto V
CC
. This means if CL input goes low, the
IC becomes waiting state both inoperating and non
operating state.
TRUTH TABLE
INPUTS
B
H
L
X
OUTPUTS
NOTE
A
CL
H
H
H
H
L
Q
Q
OUTPUT ENABLE
INHIBIT
INHIBIT
OUTPUT ENABLE
INHIBIT
X
H
L
X
L
L
H
H
X
L
H
X:Don’tCare Z: High Impedance
INPUT AND OUTPUT EQUIVALENT CIRCUIT
M54/M74HC423/423A
4/14
相关PDF资料 |
PDF描述 |
|---|---|
| M54HC423M1R | DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR |
| M54HC423B1R | DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR |
| M54HC423AM1R | RECTIFIER SCHOTTKY SINGLE 1A 100V 25A-ifsm 0.8V-vf 0.5mA-ir DO-41 1K/BULK |
| M54HC423F1R | PLUG, D, PCB, R/A, 15WAY; Connector type:D Sub, Filtered; Gender:Plug; Ways, No. of:15; Mating cycles, No. of:100; Termination method:PCB; Material, contact:Turned Copper alloy; Plating, contact:Gold over Nickel; Material:Steel; RoHS Compliant: Yes |
| M54HC42F1R | XTAL MTL T/H HC49/U |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M54HC423F1R | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR |
| M54HC423M1R | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR |
| M54HC42F1R | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:BCD TO DECIMAL DECODER |
| M54HC4316 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:QUAD BILATERAL SWITCH |
| M54HC4316F1R | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:QUAD BILATERAL SWITCH |
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