T74VCXHR162245中文資料東芝數(shù)據(jù)手冊(cè)PDF規(guī)格書

Functional Description

? Low-Voltage 16-Bit Bus Transceiver with Bushold and Series Resistor

General

The T74VCXHR162245 is a high-performance CMOS 16-bit bus transceiver. Designed for use in 1.8 V, 2.5 V or

3.3 V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation.

This 16-bit bus transceiver is controlled by direction control (DIR) inputs and output enable (OE) inputs which

are common to each byte. It can be used as two 8-bit transceivers or one 16-bit transceiver. The direction of data

transmission is determined by the level of the DIR inputs. The OE inputs can be used to disable the device so

that the busses are effectively isolated.

The 26 Ω series resistor helps reducing output overshoot and undershoot without external resistor.

The A, B data inputs include active bushold circuitry, eliminating the need for external pull-up resistors to hold

unused or floating data inputs at a valid logic level.

All inputs are equipped with protection circuits against static discharge.

Features (Note)

(1) Wide operating temperature range: Topr = -40 to 125 (Note 1)

(2) 26 Ω series resistors on all outputs

(3) Low-voltage operation: VCC = 1.8 to 3.6 V

(4) Bushold on data inputs eliminating the need for external pull-up, pull-down resistors

(5) High-speed operation: tpd = 3.4 ns (max) (VCC = 3.0 to 3.6 V)

tpd = 4.3 ns (max) (VCC = 2.3 to 2.7 V)

tpd = 5.7 ns (max) (VCC = 1.8 V)

(6) Output current: IOH/IOL = ±12 mA (min) (VCC = 3.0 V)

IOH/IOL = ±8 mA (min) (VCC = 2.3 V)

IOH/IOL = ±4 mA (min) (VCC = 1.8 V)

(7) 3.6-V tolerant control inputs