Member of the Texas Instruments

Widebus Family

Designed to Be Used in Voltage-Limiting

Applications

6.5-Ω On-State Connection Between Ports

A and B

Flow-Through Pinout for Ease of Printed

Circuit Board Trace Routing

Direct Interface With GTL+ Levels

ESD Protection Exceeds JESD 22

− 2000-V Human-Body Model (A114-A)

− 200-V Machine Model (A115-A)

− 1000-V Charged-Device Model (C101)

description/ordering information

The SN74TVC16222A provides 23 parallel

NMOS pass transistors with a common gate. The

low on-state resistance of the switch allows

connections to be made with minimal propagation

delay.

The device can be used as a 22-bit switch, with the

gates cascaded together to a reference transistor.

The low-voltage side of each pass transistor is

limited to a voltage set by the reference transistor.

This is done to protect components with inputs

that are sensitive to high-state voltage-level

overshoots. (See Application Information in this

data sheet.)

All of the transistors in the TVC array have the same electrical characteristics; therefore, any one of them can

be used as the reference transistor. Because, within the device, the characteristics from transistor to transistor

are equal, the maximum output high-state voltage (VOH) is approximately the reference voltage (VREF), with

minimal deviation from one output to another. This is a benefit of the TVC solution over discrete devices.

Because the fabrication of the transistors is symmetrical, either port connection of each bit can be used as the

low-voltage side, and the I/O signals are bidirectional through each FET.