TMUX1574_V02中文资料德州仪器数据手册PDF规格书

1 Features

1• Wide supply range: 1.5 V to 5.5 V

• Low on-capacitance: 7.5 pF

• Low on-resistance: 2 Ω

• High bandwidth: 2 GHz

• -40°C to +125°C operating temperature

• 1.8 V Logic Compatible

• Supports Input Voltage Beyond Supply

• Integrated Pull Down Resistor on Logic Pins

• Bidirectional Signal Path

• Fail-Safe Logic

• Powered-off Protection up to 3.6 V Signals

– Pinout compatible to SN74CBTLV3257

2 Applications

• Flash memory sharing

• JTAG multiplexing

• SPI multiplexing

• eMMC multiplexing

• Servers

• Data center switches & routers

• Wireless infrastructure

• PC & notebooks

• Building automation

• Grid infrastructure

• ePOS

• Appliances

3 Description

The TMUX1574 is a complementary metal-oxide

semiconductor (CMOS) switch. The TMUX1574

offers 2:1 SPDT switch configuration with 4-channels.

Wide operating supply of 1.5 V to 5.5 V allows for use

in a broad array of applications from servers and

communication equipment to industrial applications.

The device supports bidirectional analog and digital

signals on the source (SxA, SxB) and drain (Dx) pins

and can pass signals above supply up to VDD x 2,

with a maximum input/output voltage of 5.5 V.

Powered-off Protection up to 3.6 V on the signal path

of the TMUX1574 provides isolation when the supply

voltage is removed (VDD = 0 V). Without this

protection feature, switches can back-power the

supply rail through an internal ESD diode and cause

potential damage to the system.

Fail-Safe Logic circuitry allows voltages on the logic

control pins to be applied before the supply pin,

protecting the device from potential damage. All

control inputs have 1.8 V logic compatible thresholds,

ensuring both TTL and CMOS logic compatibility

when operating in the valid supply voltage range.

Integrated pull down resistor on the logic pins

removes external components to reduce system size

and cost.