74ALVC164245数据手册集成电路（IC）的转换器电平移位器规格书PDF

描述 Description

The 74ALVC164245 is a 16-bit dual-supply translating transceiver with 3-state outputs. The device features high-performance, low-power and low-voltage, and it is CMOS device that outperforms most advanced CMOS compatible TTL series.
The device can be used as two 8-bit transceivers or one 16-bit transceiver. The nAn and nBn are 16-bit data input-output ports. nDIR are the direction control inputs and nOE are the output enable inputs. VCCA and VCCB are two supply pins that accept the voltage from 1.5V to 3.6V and 1.5V to 5.5V respectively. Both 3V and 5V devices can drive inputs, enabling this device to operate as translator in a mixed 3V and 5V system environment.
When nDIR is set high, it allows transmission from nAn to nBn. When nDIR is set low, it allows transmission from nBn to nAn. When the output enable (nOE) input is high, nAn and nBn ports are in a high-impedance state. nAn, nOE and nDIR are referenced to VCCA and pins nBn are referenced to VCCB.
In suspend mode, both nAn and nBn are in high-impedance state when either VCCA or VCCB input is 0V. VCCA must be less than or equal to VCCB for proper device operation, except in suspend mode.

特性 Features

• VCCA Supply Voltage Range: 1.5V to 3.6V

• VCCB Supply Voltage Range: 1.5V to 5.5V

• Inputs Accept Voltages up to 5.5V

• Control Inputs Voltage Range: 2.7V to 5.5V

• Input and Output Interface Capability to 5V System Environment

• CMOS Low Power Dissipation

• Direct Interface with TTL Levels

• Outputs in High-Impedance State when VCCA or VCCB = 0V

• -40℃ to +125℃ Operating Temperature Range

• Available in a Green TSSOP-48 Package