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74HC123; 74HCT123
Datasheet
74HC123; 74HCT123
(Product Specification)
13-Jul-09, 24 pages, 147 kB
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:
- The basic pulse is programmed by selection of an external resistor (REXT) and capacitor (CEXT).
- 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.
- 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 pct 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 Cel to +85 Cel and from -40 Cel to +125 Cel
Products/packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| 74HC123BQ | 74HC123BQ,115 | 9352 824 53115 | Volume production | SOT763-1
(DHVQFN16) | Reel Pack, SMD, 7" | Standard Marking | |
| 74HC123D | 74HC123D,652 | 9337 139 60652 | Volume production | SOT109 | Bulk Pack, CECC | Standard Marking | |
| 74HC123D | 74HC123D,653 | 9337 139 60653 | Volume production | SOT109 | Reel Pack, SMD, 13", CECC | Standard Marking | |
| 74HC123DB | 74HC123DB,112 | 9351 903 30112 | Volume production | SOT338-1
(SSOP16) | Tube | Standard Marking | |
| 74HC123DB | 74HC123DB,118 | 9351 903 30118 | Volume production | SOT338-1
(SSOP16) | Reel Pack, SMD, 13" | Standard Marking | |
| 74HC123N | 74HC123N,652 | 9336 692 80652 | Volume production | SOT38-4
(DIP16) | Bulk Pack, CECC | Standard Marking | |
| 74HC123PW | 74HC123PW,112 | 9351 868 60112 | Volume production | SOT403-1
(TSSOP16) | Tube | Standard Marking | |
| 74HC123PW | 74HC123PW,118 | 9351 868 60118 | Volume production | SOT403-1
(TSSOP16) | Reel Pack, SMD, 13" | Standard Marking | |
| 74HCT123D | 74HCT123D,652 | 9337 139 70652 | Volume production | SOT109 | Bulk Pack, CECC | Standard Marking | |
| 74HCT123D | 74HCT123D,653 | 9337 139 70653 | Volume production | SOT109 | Reel Pack, SMD, 13", CECC | Standard Marking | |
| 74HCT123DB | 74HCT123DB,112 | 9351 868 40112 | Volume production | SOT338-1
(SSOP16) | Tube | Standard Marking | |
| 74HCT123DB | 74HCT123DB,118 | 9351 868 40118 | Volume production | SOT338-1
(SSOP16) | Reel Pack, SMD, 13" | Standard Marking | |
| 74HCT123N | 74HCT123N,652 | 9336 699 10652 | Volume production | SOT38-4
(DIP16) | Bulk Pack, CECC | Standard Marking | |
| 74HCT123PW | 74HCT123PW,112 | 9351 868 50112 | Volume production | SOT403-1
(TSSOP16) | Tube | Standard Marking | |
| 74HCT123PW | 74HCT123PW,118 | 9351 868 50118 | 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 |
|---|---|---|---|---|---|---|---|---|
| 74HC123BQ | 74HC123BQ,115 | 74HC123BQ |
| Always Pb-free | 6,62 | 1,51E+08 | 1 | |
| 74HC123D | 74HC123D,652 | 74HC123D |
| week 30, 2004 | 6,62 | 1,51E+08 | 1 | |
| 74HC123D | 74HC123D,653 | 74HC123D |
| week 30, 2004 | 6,62 | 1,51E+08 | 1 | |
| 74HC123DB | 74HC123DB,112 | 74HC123DB |
| week 13, 2005 | 6,62 | 1,51E+08 | 1 | |
| 74HC123DB | 74HC123DB,118 | 74HC123DB |
| week 13, 2005 | 6,62 | 1,51E+08 | 1 | |
| 74HC123N | 74HC123N,652 | 74HC123N |
| Always Pb-free | 6,62 | 1,51E+08 | NA | |
| 74HC123PW | 74HC123PW,112 | 74HC123PW |
| week 10, 2005 | 6,62 | 1,51E+08 | 1 | |
| 74HC123PW | 74HC123PW,118 | 74HC123PW |
| week 10, 2005 | 6,62 | 1,51E+08 | 1 | |
| 74HCT123D | 74HCT123D,652 | 74HCT123D |
| week 6, 2004 | 6,62 | 1,51E+08 | 1 | |
| 74HCT123D | 74HCT123D,653 | 74HCT123D |
| week 6, 2004 | 6,62 | 1,51E+08 | 1 | |
| 74HCT123DB | 74HCT123DB,112 | 74HCT123DB |
| week 12, 2005 | 6,62 | 1,51E+08 | 1 | |
| 74HCT123DB | 74HCT123DB,118 | 74HCT123DB |
| week 12, 2005 | 6,62 | 1,51E+08 | 1 | |
| 74HCT123N | 74HCT123N,652 | 74HCT123N |
| Always Pb-free | 6,62 | 1,51E+08 | NA | |
| 74HCT123PW | 74HCT123PW,112 | 74HCT123PW |
| week 10, 2005 | 6,62 | 1,51E+08 | 1 | |
| 74HCT123PW | 74HCT123PW,118 | 74HCT123PW |
| week 10, 2005 | 6,62 | 1,51E+08 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 74HC123BQ | 9352 824 53115 | 74HC123BQ,115 | 0.2000 | not available | ||||||
| 74HC123D | 9337 139 60652 | 74HC123D,652 | 0.2400 | NA | NEWARK | 1,332 | 11/20/2009 | Buy online | not available | |
| NA | ARROW ELECTRONICS | 3,250 | 11/19/2009 | Buy online | ||||||
| NA | DIGI-KEY CORPORATION | 1,401 | 11/20/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 1,671 | 11/20/2009 | Buy online | ||||||
| NA | AVNET ELECTRONICS MARKETING | 2,322 | 11/19/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 1,671 | 11/20/2009 | Buy online | ||||||
| 74HC123D | 9337 139 60653 | 74HC123D,653 | 0.2400 | NA | NEWARK | 1,332 | 11/20/2009 | Buy online | Order samples | |
| NA | ARROW ELECTRONICS | 3,250 | 11/19/2009 | Buy online | ||||||
| NA | DIGI-KEY CORPORATION | 15,827 | 11/20/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 24 | 11/20/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 24 | 11/20/2009 | Buy online | ||||||
| ASIA | SAC - Taiwan | yes | 2500 | 11/20/2009 | Buy online | |||||
| ASIA | SACL - Hong Kong/China | yes | 2500 | 11/20/2009 | Buy online | |||||
| ASIA | WPI | 1,345 | 1 | 11/19/2009 | Buy online | |||||
| 74HC123DB | 9351 903 30112 | 74HC123DB,112 | 0.2600 | NA | DIGI-KEY CORPORATION | 6,324 | 11/20/2009 | Buy online | not available | |
| 74HC123DB | 9351 903 30118 | 74HC123DB,118 | 0.2600 | not available | ||||||
| 74HC123N | 9336 692 80652 | 74HC123N,652 | 0.2400 | NA | NEWARK | 1,267 | 11/20/2009 | Buy online | Order samples | |
| NA | ARROW ELECTRONICS | 2,377 | 11/19/2009 | Buy online | ||||||
| NA | DIGI-KEY CORPORATION | 773 | 11/20/2009 | Buy online | ||||||
| NA | FUTURE ELECTRONICS | 46,254 | 11/19/2009 | Buy online | ||||||
| NA | AVNET ELECTRONICS MARKETING | 1,863 | 11/19/2009 | Buy online | ||||||
| ASIA | WPI | 250 | 25 | 11/19/2009 | Buy online | |||||
| 74HC123PW | 9351 868 60112 | 74HC123PW,112 | 0.2400 | NA | DIGI-KEY CORPORATION | 1,011 | 11/20/2009 | Buy online | not available | |
| NA | MOUSER ELECTRONICS | 1,994 | 11/20/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 1,994 | 11/20/2009 | Buy online | ||||||
| 74HC123PW | 9351 868 60118 | 74HC123PW,118 | 0.2400 | NA | FUTURE ELECTRONICS | 2,620 | 11/19/2009 | Buy online | not available | |
| 74HCT123D | 9337 139 70652 | 74HCT123D,652 | 0.2300 | NA | NEWARK | 387 | 11/20/2009 | Buy online | not available | |
| NA | DIGI-KEY CORPORATION | 1,110 | 11/20/2009 | Buy online | ||||||
| NA | FUTURE ELECTRONICS | 1,135 | 11/19/2009 | Buy online | ||||||
| NA | AVNET ELECTRONICS MARKETING | 3,350 | 11/19/2009 | Buy online | ||||||
| 74HCT123D | 9337 139 70653 | 74HCT123D,653 | 0.2300 | NA | NEWARK | 387 | 11/20/2009 | Buy online | Order samples | |
| NA | MOUSER ELECTRONICS | 85 | 11/20/2009 | Buy online | ||||||
| NA | FUTURE ELECTRONICS | 23,650 | 11/19/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 85 | 11/20/2009 | Buy online | ||||||
| ASIA | WPI | 5,000 | 2500 | 11/19/2009 | Buy online | |||||
| 74HCT123DB | 9351 868 40112 | 74HCT123DB,112 | 0.3700 | NA | DIGI-KEY CORPORATION | 2,226 | 11/20/2009 | Buy online | not available | |
| 74HCT123DB | 9351 868 40118 | 74HCT123DB,118 | 0.3700 | NA | MOUSER ELECTRONICS | 100 | 11/20/2009 | Buy online | Order samples | |
| NA | MOUSER ELECTRONICS | 100 | 11/20/2009 | Buy online | ||||||
| 74HCT123N | 9336 699 10652 | 74HCT123N,652 | 0.2300 | NA | NEWARK | 896 | 11/20/2009 | Buy online | Order samples | |
| NA | ARROW ELECTRONICS | 450 | 11/19/2009 | Buy online | ||||||
| NA | DIGI-KEY CORPORATION | 1,833 | 11/20/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 723 | 11/20/2009 | Buy online | ||||||
| NA | FUTURE ELECTRONICS | 1,070 | 11/19/2009 | Buy online | ||||||
| NA | AVNET ELECTRONICS MARKETING | 2,555 | 11/19/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 723 | 11/20/2009 | Buy online | ||||||
| 74HCT123PW | 9351 868 50112 | 74HCT123PW,112 | 0.2300 | NA | DIGI-KEY CORPORATION | 650 | 11/20/2009 | Buy online | not available | |
| NA | MOUSER ELECTRONICS | 1,236 | 11/20/2009 | Buy online | ||||||
| NA | MOUSER ELECTRONICS | 1,236 | 11/20/2009 | Buy online | ||||||
| 74HCT123PW | 9351 868 50118 | 74HCT123PW,118 | 0.2300 | NA | MOUSER ELECTRONICS | 96 | 11/20/2009 | Buy online | not available | |
| NA | MOUSER ELECTRONICS | 96 | 11/20/2009 | Buy online | ||||||
| ASIA | SAC - Taiwan | yes | 2500 | 11/20/2009 | 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 |
|---|---|---|---|---|---|---|---|---|
| 74HC123BQ | SOT763-1
(DHVQFN16) | Quad Buffer/Line Driver with Active LOW Output Enable (3-State) | 9@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 7.8 mA |
| 74HC123D | SOT109
| Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input | 26@5V | 2.0-6.0 V | 16 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC123DB | SOT338-1
(SSOP16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input | 26@5V | 2.0-6.0 V | 16 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC123N | SOT38-4
(DIP16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input | 26@5V | 2.0-6.0 V | 16 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC123PW | SOT403-1
(TSSOP16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input | 26@5V | 2.0-6.0 V | 16 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HCT123D | SOT109
| Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input; TTL Enabled | 26 | 4.5-5.5V | 16 | Low Power | TTL | +/- 4 mA |
| 74HCT123DB | SOT338-1
(SSOP16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input; TTL Enabled | 26 | 4.5-5.5V | 16 | Low Power | TTL | +/- 4 mA |
| 74HCT123N | SOT38-4
(DIP16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input; TTL Enabled | 26 | 4.5-5.5V | 16 | Low Power | TTL | +/- 4 mA |
| 74HCT123PW | SOT403-1
(TSSOP16) | Dual Retriggerable Monostable Multivibrator with Reset; Triggerable via Reset Input; TTL Enabled | 26 | 4.5-5.5V | 16 | Low Power | TTL | +/- 4 mA |
Similar products
74HC123; 74HCT123
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