Click to expand full text
74CB3Q3257
4-bit 1-of-2 FET multiplexer/demultiplexer with charge pump
Rev. 1 — 14 August 2017
Product data sheet
1 General description
The 74CB3Q3257 is a quad high-bandwidth single-pole, double-throw FET bus switch. The device features one select input (S) and one output enable input (OE). The switch is disabled when the OE input is HIGH. An internal charge-pump increases the gate voltage of the NMOS pass transistor. The result is improved RON and RON(flat) performance and the ability to switch 5 V signals when VCC = 3.3 V.
2 Features and benefits
• Wide supply voltage range from 2.3 V to 3.6 V • Overvoltage switching on switch ports:
– 0 V to 5 V switching with VCC = 2.5 V – 0 V to 5 V switching with VCC = 3.3 V • 4 Ω (typical) ON resistance • 3.
74CB3Q3257 Datasheet
