描述 Description

These quad differential receivers accept digital data over balanced transmission lines. They translate differential input logic levels to TTL output logic levels. All devices in this family have four receivers with a common enable control. These receivers are pin equivalent to the general-trade 26LS32, but offer increased speed and decreased power consumption.

They replace the Agere 41 Series receivers.

The BRF1A device is the generic receiver in this family and requires the user to supply external resistors on the circuit board for impedance matching.

The BRF2A is identical to the BRF1A, but has an electrostatic discharge (ESD) protection circuit added to significantly improve the ESD human-body model (HBM) characteristics on the differential input terminals.

特性 Features

■ Pin equivalent to the general-trade 26LS32 device, with improved speed, reduced power consumption, and significantly lower levels of EMI

■ High input impedance approximately 8 k?

■ Four line receivers per package

■ 400 Mbits/s maximum data rate when used with Agere Systems Inc. data transmission drivers

■ Meets enhanced small device interface (ESDI) standards

■ 4.0 ns maximum propagation delay

■ <0.20 V input sensitivity

■ ?1.2 V to +7.2 V common-mode range

■ ?40 °C to +125 °C ambient operating temperature range (wider than the 41 Series)

■ Single 5.0 V ± 10 supply

■ Output defaults to logic 1 when inputs are left open*

■ Available in four package types

■ Lower power requirement than the 41 Series