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74LV123
Datasheet
74LV123
(Product Specification)
08-Nov-07, 23 pages, 135 kB
General description
The 74LV123 is a low-voltage Si-gate CMOS device and is pin and function compatible with the 74HC123; 74HCT123. It is a dual retriggerable monostable multivibrator which uses three methods to control the output pulse width:
- The basic pulse time is programmed by the selection of an external resistor (REXT) and capacitor (CEXT). These are normally connected as shown in Figure 9.
- 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 (see Figure 12).
- Alternatively, an output delay can be terminated at any time by a LOW-going edge on input nRD, which also inhibits the triggering (see Figure 13).
Schmitt-trigger action in the nA and nB inputs makes the circuit highly tolerant of slower input rise and fall times.
Features
- Optimized for low-voltage applications: 1.0 V to 5.5 V
- Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V
- Typical output ground bounce: < 0.8 V at VCC = 3.3 V and Tamb = 25 Cel
- Typical HIGH-level output voltage (VOH) undershoot: > 2 V at VCC = 3.3 V and Tamb = 25 Cel
- DC triggered from active HIGH or active LOW inputs
- Retriggerable for very long pulses up to 100 pct duty factor
- Direct reset terminates output pulses
- Schmitt-trigger action on all inputs except for the reset input
Products/packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| 74LV123BQ | 74LV123BQ,115 | 9352 843 17115 | Volume production | SOT763-1
(DHVQFN16) | Reel Pack, SMD, 7" | Standard Marking | |
| 74LV123D | 74LV123D,112 | 9352 102 50112 | Volume production | SOT109 | Tube | Standard Marking | |
| 74LV123D | 74LV123D,118 | 9352 102 50118 | Volume production | SOT109 | Reel Pack, SMD, 13" | Standard Marking | |
| 74LV123DB | 74LV123DB,112 | 9352 102 60112 | Volume production | SOT338-1
(SSOP16) | Tube | Standard Marking | |
| 74LV123DB | 74LV123DB,118 | 9352 102 60118 | Volume production | SOT338-1
(SSOP16) | Reel Pack, SMD, 13" | Standard Marking | |
| 74LV123N | 74LV123N,112 | 9352 102 70112 | Volume production | SOT38-4
(DIP16) | Tube | Standard Marking | |
| 74LV123PW | 74LV123PW,112 | 9352 102 80112 | Volume production | SOT403-1
(TSSOP16) | Tube | Standard Marking | |
| 74LV123PW | 74LV123PW,118 | 9352 102 80118 | Volume production | SOT403-1
(TSSOP16) | Reel Pack, SMD, 13" | Standard Marking |
Quality/reliability/chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| 74LV123BQ | 74LV123BQ,115 | 74LV123BQ |
| Always Pb-free | 10,23 | 9,78E+07 | 1 | |
| 74LV123D | 74LV123D,112 | 74LV123D |
| week 6, 2004 | 10,23 | 9,78E+07 | 1 | |
| 74LV123D | 74LV123D,118 | 74LV123D |
| week 6, 2004 | 10,23 | 9,78E+07 | 1 | |
| 74LV123DB | 74LV123DB,112 | 74LV123DB |
| week 12, 2005 | 10,23 | 9,78E+07 | 1 | |
| 74LV123DB | 74LV123DB,118 | 74LV123DB |
| week 12, 2005 | 10,23 | 9,78E+07 | 1 | |
| 74LV123N | 74LV123N,112 | 74LV123N |
| Always Pb-free | 10,23 | 9,78E+07 | NA | |
| 74LV123PW | 74LV123PW,112 | 74LV123PW |
| week 10, 2005 | 10,23 | 9,78E+07 | 1 | |
| 74LV123PW | 74LV123PW,118 | 74LV123PW |
| week 10, 2005 | 10,23 | 9,78E+07 | 1 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|---|
| 74LV123BQ | 9352 843 17115 | 74LV123BQ,115 | Order samples | |||||||
| 74LV123D | 9352 102 50112 | 74LV123D,112 | 0.2800 | NA | ARROW ELECTRONICS | 2,500 | 11/19/2009 | Buy online | not available | |
| NA | MOUSER ELECTRONICS | 2,965 | 11/20/2009 | Buy online | ||||||
| NA | AVNET ELECTRONICS MARKETING | 3,458 | 11/19/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 2,965 | 11/20/2009 | Buy online | ||||||
| 74LV123D | 9352 102 50118 | 74LV123D,118 | 0.2800 | NA | ARROW ELECTRONICS | 2,500 | 11/19/2009 | Buy online | not available | |
| 74LV123DB | 9352 102 60112 | 74LV123DB,112 | 0.2800 | NA | AVNET ELECTRONICS MARKETING | 6,482 | 11/19/2009 | Buy online | not available | |
| 74LV123DB | 9352 102 60118 | 74LV123DB,118 | 0.2800 | NA | AVNET ELECTRONICS MARKETING | 3,241 | 11/19/2009 | Buy online | not available | |
| 74LV123N | 9352 102 70112 | 74LV123N,112 | 0.3200 | NA | DIGI-KEY CORPORATION | 194 | 11/20/2009 | Buy online | Order samples | |
| NA | MOUSER ELECTRONICS | 1,988 | 11/20/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 1,988 | 11/20/2009 | Buy online | ||||||
| 74LV123PW | 9352 102 80112 | 74LV123PW,112 | 0.2800 | not available | ||||||
| 74LV123PW | 9352 102 80118 | 74LV123PW,118 | 0.2800 | NA | MOUSER ELECTRONICS | 4,800 | 11/20/2009 | Buy online | Order samples | |
| NA | MOUSER ELECTRONICS | 4,800 | 11/20/2009 | Buy online | ||||||
| ASIA | SAC - Taiwan | yes | 2500 | 11/20/2009 | Buy online | |||||
| ASIA | WPI | 15,000 | 2500 | 11/19/2009 | Buy online |
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| 74LV123BQ | SOT763-1
(DHVQFN16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input | 20@3.3V | 1.0-5.5 V | 16 | Low Power or Battery Applications | TTL | +/- 12 mA |
| 74LV123D | SOT109
| Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input | 20@3.3V | 1.0-5.5 V | 16 | Low Power or Battery Applications | TTL | +/- 12 mA |
| 74LV123DB | SOT338-1
(SSOP16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input | 20@3.3V | 1.0-5.5 V | 16 | Low Power or Battery Applications | TTL | +/- 12 mA |
| 74LV123N | SOT38-4
(DIP16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input | 20@3.3V | 1.0-5.5 V | 16 | Low Power or Battery Applications | TTL | +/- 12 mA |
| 74LV123PW | SOT403-1
(TSSOP16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input | 20@3.3V | 1.0-5.5 V | 16 | Low Power or Battery Applications | TTL | +/- 12 mA |
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