74HC123PW,118 Dual retriggerable monostable multivibrator with reset
manufacturer:
Manufacturer
Description:
Monostable Multivibrator 65 ns 16-TSSOP
Category:
Integrated Circuit Chips
Price:
0.1USD
Payment Method:
T/T, Western Union,Paypal
Specifications
Features:
8-bit Serial Input
Voltage:
1.5 V
Description:
High-speed Si-gate CMOS Devices
Temperature:
25 °C
Use:
/
Type:
Transistors
Highlight:
circuit board ic
,electronic chip board
Introduction
74HC123PW Dual retriggerable monostable multivibrator with reset
General description
The 74HC123; 74HCT123 are high-speed Si-gate CMOS devices and are pin compatible
with Low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The 74HC123; 74HCT123 are dual retriggerable monostable multivibrators with output pulse width control by three methods:
1. The basic pulse is programmed by selection of an external resistor (REXT) and capacitor (CEXT).
2. Once triggered, the basic output pulse width may be extended by retriggering the
gated active LOW-going edge input (nA) or the active HIGH-going edge input (nB). By
repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made
as long as desired. Alternatively an output delay can be terminated at any time by a
LOW-going edge on input nRD, which also inhibits the triggering.
3. An internal connection from nRD to the input gates makes it possible to trigger the
circuit by a HIGH-going signal at input nRD as shown in the function table.
Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower
input rise and fall times.
The 74HC123; 74HCT123 are identical to the 74HC423; 74HCT423 but can be triggered
via the reset input.
Features
DC triggered from active HIGH or active LOW inputs
Retriggerable for very long pulses up to 100 % duty factor
Direct reset terminates output pulse
Schmitt-trigger action on all inputs except for the reset input
ESD protection:
HBM JESD22-A114E exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Specified from −40 °C to +85 °C and from −40 °C + 125 °C
|
Symbol
|
PIN |
Description
|
| 1A | 1 | negative-edge triggered input 1 |
| 1B | 2 | positive-edge triggered input 1 |
| 1RD | 3 | direct reset LOW and positive-edge triggered input 1 |
| 1Q | 4 | active LOW output 1 |
IC STOCK
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MOQ:
5 PCS