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74LVC257A
General description
The 74LVC257A is a high-performance, low-power, low-voltage, Si-gate CMOS device and superior to most advanced CMOS compatible TTL families.
Inputs can be driven from either 3.3 or 5.0 V devices. In 3-state operation, outputs can handle 5 V. This feature allows the use of these devices as translators in a mixed 3.3 and 5 V environment.
The 74LVC257A is a quad 2-input multiplexer with 3-state outputs, which select 4 bits of data from two sources and are controlled by a common data select input (pin S). The data inputs from source 0 (pins 1I0 to 4I0) are selected when pin S is LOW and the data inputs from source 1 (pins 1I1 to 4I1) are selected when pin S is HIGH. Data appears at the outputs (pins 1Y to 4Y) in true (non-inverting) form from the selected inputs. The 74LVC257A is the logic implementation of a 4-pole, 2-position switch, where the position of the switch is determined by the logic levels applied to pin S. The outputs are forced to a high-impedance OFF-state when pin OE is HIGH.
Features
- 5 V tolerant inputs/outputs, 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
- Output drive capability 50 Ohm transmission lines at 85 Cel
- Complies with JEDEC standard no. 8-1A
- ESD protection:
- Specified from -40 to +85 Cel and -40 to +125 Cel.
-
HBM EIA/JESD22-A114-A exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74LVC257ABQ | 74LVC257ABQ-G | 9352 751 74115 | Volume production | SOT763-1
(DHVQFN16) | Reel Pack, SMD, 7" | Standard Marking | 74LVC257ABQ
| Always Pb-free |
| 74LVC257AD | 74LVC257AD | 9352 606 78112 | Volume production | SOT109-1
(SO16) | Tube | Standard Marking | 74LVC257AD
| week 35, 2004 |
| 74LVC257AD | 74LVC257AD-T | 9352 606 78118 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" | Standard Marking | 74LVC257AD
| week 35, 2004 |
| 74LVC257ADB | 74LVC257ADB | 9352 606 79112 | Volume production | SOT338-1
(SSOP16) | Tube | Standard Marking | 74LVC257ADB
| week 12, 2005 |
| 74LVC257ADB | 74LVC257ADB-T | 9352 606 79118 | Volume production | SOT338-1
(SSOP16) | Reel Pack, SMD, 13" | Standard Marking | 74LVC257ADB
| week 12, 2005 |
| 74LVC257APW | 74LVC257APW | 9352 606 80112 | Volume production | SOT403-1
(TSSOP16) | Tube | Standard Marking | 74LVC257APW
| week 10, 2005 |
| 74LVC257APW | 74LVC257APW-T | 9352 606 80118 | Volume production | SOT403-1
(TSSOP16) | Reel Pack, SMD, 13" | Standard Marking | 74LVC257APW
| week 10, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| 74LVC257ABQ | 9352 751 74115 | 0.3300 | Order samples | ||||||
| 74LVC257AD | 9352 606 78112 | 0.2800 | not available | ||||||
| 74LVC257AD | 9352 606 78118 | 0.2800 | ASIA | SAC - Taiwan | yes | 2500 | 01/08/2009 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 2,500 | 1/7/2009 | Buy online | |||||
| 74LVC257ADB | 9352 606 79112 | 0.2800 | not available | ||||||
| 74LVC257ADB | 9352 606 79118 | 0.2800 | not available | ||||||
| 74LVC257APW | 9352 606 80112 | 0.2800 | NA | ARROW ELECTRONICS | 3,858 | 1/6/2009 | Buy online | not available | |
| 74LVC257APW | 9352 606 80118 | 0.2800 | NA | ARROW ELECTRONICS | 17,500 | 1/6/2009 | Buy online | Order samples | |
| NA | DIGI-KEY CORPORATION | 2,500 | 1/6/2009 | Buy online | |||||
| NA | DIGI-KEY CORPORATION | 4,990 | 1/6/2009 | Buy online | |||||
| NA | MOUSER ELECTRONICS | 95 | 1/7/2009 | Buy online |
Design support
Application Notes
Support Documents
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| 74LVC257ABQ | SOT763-1
(DHVQFN16) | 3.3V Quad 2-Input Multiplexer (3-State) | 3.9@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC257AD | SOT109-1
(SO16) | 3.3V Quad 2-Input Multiplexer (3-State) | 3.9@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC257ADB | SOT338-1
(SSOP16) | 3.3V Quad 2-Input Multiplexer (3-State) | 3.9@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC257APW | SOT403-1
(TSSOP16) | 3.3V Quad 2-Input Multiplexer (3-State) | 3.9@3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
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74LVC257A
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