74HC123; 74HCT123 Dual Retriggerable Monostable Multivibrator
High-speed Si-gate CMOS device with pulse width control and ESD protection
- Supply Voltage: -0.5 to +7 V
- Input Clamping Current: +20 mA
- Output Clamping Current: +20 mA
- Output Current: +25 mA
- Supply Current: 50 mA
- Ground Current: -50 mA
- Storage Temperature: -65 to +150 °C
- Package Includes: 1 X 74HC123 Dual Retriggerable Monostable Multivibrator with Reset IC (74123 IC) DIP-16 Package
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
- ESD protection: HBM JESD22-A114E exceeds 2000 VMM JESD22-A115-A exceeds 200 V
The 74HC123; 74HCT123 are dual retriggerable monostable multivibrators with output pulse width control by external resistor (REXT) and capacitor (CEXT). The output pulse width can be extended by retriggering the inputs (nA, nB) or terminated by a LOW-going edge on input nRD. Schmitt-trigger action in the inputs makes the circuit tolerant to slower input rise and fall times.
An internal connection from nRD to the input gates allows triggering by a HIGH-going signal at input nRD. These devices are identical to the 74HC423; 74HCT423 but can be triggered via the reset input.
Specified in compliance with JEDEC standard no. 7A, the 74HC123; 74HCT123 are suitable for operation in temperature ranges from -40 °C to +85 °C and -40 °C to +125 °C.
* Images are for illustration only; actual product may vary.