74HC123D,653
Multivibrators
Technical Specifications
| Type | Description |
|---|---|
| Input Type | Schmitt trigger |
| Logic Type | Monostable |
| Number Of Channels | 2 |
| Package / Case | SOIC-16 |
Product Introduction
The 74HC123; 74HCT123 is a dual retriggerable monostable multivibrator with reset. The basic output pulse width is programmed by selection of external components (R_EXT and C_EXT). Once triggered this basic pulse width may be extended by retriggering either of the edge triggered inputs (nA or nB). By repeating this process, the output pulse period (ΔnQ = HIGH, nQ(overline) = 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. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V_CC.
Schmitt - trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower input rise and fall times.
Features
- Wide supply voltage range from 2.0 V to 6.0 V
- CMOS low power dissipation
- High noise immunity
- Latch - up performance exceeds 100 mA per JESD 78 Class II Level B
- Complies with JEDEC standards:
- JESD8C (2.7 V to 3.6 V)
- JESD7A (2.0 V to 6.0 V)
- Input levels:
- For 74HC123: CMOS level
- For 74HCT123: TTL level
- 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: ANSI/ESDA/JEDEC JS - 001 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS - 002 class C3 exceeds 1000 V
- Multiple package options
- Specified from - 40 ℃ to + 85 ℃ and from - 40 ℃ to + 125 ℃
Datasheet
Alternative Parts
Common 74HC123D,653 alternatives overseas buyers search for:
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | ROHS3 |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
Sourcing Information
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