Toshiba Semiconductor 74LCX series multiplexer, 74LCX257FT, quad 2:1 circuit, 1.65V to 3.6V supply, 24mA output drive, 16-TSSOP surface mount package, -40°C to 125°C operating temperature.
| Parameter | Value |
|---|---|
| Type | Multiplexer |
| Series | 74LCX |
| Mounting | Surface Mount |
| Voltage | 1.65V ~ 3.6V |
| Voltage supply source | Single Supply |
| Current - output high, low | 24mA, 24mA |
| Operating temperature | -40°C ~ 125°C |
| Circuit | 4 x 2:1 |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 16-TSSOP (0.173\", 4.40mm Width) |
| Independent circuits | 1 |
The 74LCX257FT is a quad 2:1 multiplexer from Toshiba's 74LCX series, routing one of two 4-bit data inputs to the output based on a common select line.
No official second-source or pin-compatible replacement is listed, so the 74LCX257FT is a single-source item on the BOM.
The supplier device package is designated 16-TSSOPB.
Both are quad 2:1 multiplexers, but the 74LCX257FT runs from 1.65-3.6 V and delivers 24 mA output drive over -40°C to 125°C. The 74HC157D operates at 5.2 mA output over -40°C to 85°C. The 74LCX257FT is the lower-voltage, higher-drive option for 3.3 V and below designs, and it covers a wider temperature range.