Texas Instruments 74ACT series, CD74ACT257M, Type Multiplexer, Circuit 4 x 2:1, Single Supply 4.5V ~ 5.5V, Output High/Low 75mA, 75mA, Operating Temperature -55°C ~ 125°C, 16-SOIC (0.154", 3.90mm Width), Surface Mount, Tube.
| Parameter | Value |
|---|---|
| Type | Multiplexer |
| Series | 74ACT |
| Mounting type | Surface Mount |
| Voltage | 4.5V ~ 5.5V |
| Voltage supply source | Single Supply |
| Current - output high, low | 75mA, 75mA |
| Operating temperature | -55°C ~ 125°C |
| Circuit | 4 x 2:1 |
| Package | Tube |
| Case | 16-SOIC (0.154\", 3.90mm Width) |
| Independent circuits | 1 |
The Texas Instruments CD74ACT257M is a 74ACT-series quad 2-input multiplexer (4 x 2:1) that routes one of two 4-bit data sources to a 4-bit output bus.
The 75mA output drive holds across the full temperature band, so a design validated at 25°C does not lose fan-out margin at the extremes. If your system only needs 0°C to 70°C, a 74HC or 74HCT variant may cost less, but for a mil-temp BOM line this is the correct choice.
The CD74ACT257M is a Multiplexer (Type) in the 74ACT series. It is a 4 x 2:1 multiplexer in a 16-SOIC package.
The 74ACT family is designed to be TTL-compatible at the input thresholds while operating from a 5V supply. The 75mA output drive is sufficient to drive standard TTL loads directly.