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74LVC138A
General description
The 74LVC138A is a high-performance, low-power, low-voltage, Si-gate CMOS device, superior to most advanced CMOS compatible TTL families.
The 74LVC138A accepts three binary weighted address inputs (A0, A1 and A2) and when enabled, provides 8 mutually exclusive active LOW outputs (Y0 to Y7).
The 74LVC138A features three enable inputs: two active LOW (E1 and E2) and one active HIGH (E3). Every output will be HIGH unless E1 and E2 are LOW and E3 is HIGH.
This multiple enable function allows easy parallel expansion of the 74LVC138A to a 1-of-32 (5 to 32 lines) decoder with just four 74LVC138A ICs and one inverter. The 74LVC138A can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes. Unused enable inputs must be permanently tied to their appropriate active HIGH or LOW state.
Features
- 5 V tolerant inputs for interfacing with 5 V logic
- Wide supply voltage range from 1.2 to 3.6 V
- CMOS low power consumption
- Direct interface with TTL levels
- Inputs accept voltages up to 5.5 V
- Demultiplexing capability
- Multiple input enable for easy expansion
- Ideal for memory chip select decoding
- Active LOW mutually exclusive outputs
- Output drive capability 50 Ohm transmission lines at 125 Cel
- Complies with JEDEC standard no. 8-1A
- ESD protection:
HBM EIA/JESD22-A114-A exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V. - Specified from -40 to +85 Cel and -40 to +125 Cel.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74LVC138ABQ | 74LVC138ABQ-G | 9352 733 34115 | Volume production | SOT763-1
(DHVQFN16) | Reel Pack, SMD, 7" | Standard Marking | 74LVC138ABQ
| Always Pb-free |
| 74LVC138AD | 74LVC138AD | 9352 607 45112 | Volume production | SOT109-1
(SO16) | Tube | Standard Marking | 74LVC138AD
| week 12, 2005 |
| 74LVC138AD | 74LVC138AD-T | 9352 607 45118 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" | Standard Marking | 74LVC138AD
| week 12, 2005 |
| 74LVC138ADB | 74LVC138ADB | 9352 607 46112 | Volume production | SOT338-1
(SSOP16) | Tube | Standard Marking | 74LVC138ADB
| week 13, 2005 |
| 74LVC138ADB | 74LVC138ADB-T | 9352 607 46118 | Volume production | SOT338-1
(SSOP16) | Reel Pack, SMD, 13" | Standard Marking | 74LVC138ADB
| week 13, 2005 |
| 74LVC138APW | 74LVC138APW | 9352 607 47112 | Volume production | SOT403-1
(TSSOP16) | Tube | Standard Marking | 74LVC138APW
| week 10, 2005 |
| 74LVC138APW | 74LVC138APW-T | 9352 607 47118 | Volume production | SOT403-1
(TSSOP16) | Reel Pack, SMD, 13" | Standard Marking | 74LVC138APW
| week 10, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74LVC138ABQ | 9352 733 34115 | 0.2900 | Order samples | |||||
| 74LVC138AD | 9352 607 45112 | 0.2500 | NA | ARROW ELECTRONICS | 8,253 | 11/21/2008 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 3,394 | 11/21/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 3,032 | 11/21/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS- NORTH AMER | 1,668 | 11/21/2008 | Buy online | ||||
| 74LVC138AD | 9352 607 45118 | 0.2500 | NA | DIGI-KEY CORPORATION | 5,000 | 11/21/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 5,327 | 11/21/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 1,945 | 11/21/2008 | Buy online | ||||
| 74LVC138ADB | 9352 607 46112 | 0.2500 | not available | |||||
| 74LVC138ADB | 9352 607 46118 | 0.2500 | NA | ARROW ELECTRONICS | 2,000 | 11/21/2008 | Buy online | Order samples |
| 74LVC138APW | 9352 607 47112 | 0.2500 | NA | ARROW ELECTRONICS | 3,235 | 11/21/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 4,550 | 11/21/2008 | Buy online | ||||
| 74LVC138APW | 9352 607 47118 | 0.2500 | NA | DIGI-KEY CORPORATION | 2,500 | 11/21/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 2,500 | 11/21/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS- NORTH AMER | 7,500 | 11/21/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 350 | 11/21/2008 | Buy online |
Technical documents
Application Notes
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| 74LVC138ABQ | SOT763-1
(DHVQFN16) | 3-to-8 Line Decoder/Demultiplexer; Inverting | 2.6 @ 3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC138AD | SOT109-1
(SO16) | 3-to-8 Line Decoder/Demultiplexer; Inverting | 2.6 @ 3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC138ADB | SOT338-1
(SSOP16) | 3-to-8 Line Decoder/Demultiplexer; Inverting | 2.6 @ 3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC138APW | SOT403-1
(TSSOP16) | 3-to-8 Line Decoder/Demultiplexer; Inverting | 2.6 @ 3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
Similar products
74LVC138A links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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