描述 Description

These quad differential receivers accept digital data overbalanced transmission lines. They translate differential input logic levels to TTL output logic levels.The TB5R1 is a pin- and function-compatible replacement for the Agere systems BRF1A and BRF2A; it includes 3-kV HBM and 2-kV CDM ESD protection.The TB5R2 is a pin- and function-compatible replacement for the Agere systems BRS2A and BRS2B and incorporates a 125-mV receiver input offset, preferred state output, 3-kV HBM and 2-kV CDM ESD protection. The TB5R2 preferred state feature places the high state when the inputs are open, shorted to ground, or shorted to the power supply.The power-down loading characteristics of the receiver input circuit are approximately 8 k relative to the power supplies; hence they do not load the transmission line when the circuit is powered down.The packaging for these differential line receivers include a 16-pin gull wing SOIC (DW) and SOIC (D).The enable inputs of this device include internal pullup resistors of approximately 40 k that are connected to VCC to ensure a logical high level input if the inputs are open circuited.

特性 Features

? Functional Replacements for the Agere BRF1A, BRF2A, BRS2A, and BRS2B
? Pin Equivalent to General Trade 26LS32
? High Input Impedance Approximately 8 k
? 4-ns Maximum Propagation Delay
? TB5R1 Provides 50-mV Hysteresis
? TB5R2 With -125-mV Threshold Offset for Preferred State Output
? -1.1-V to 7.1-V Common Mode Range
? Single 5-V ±10% Supply
? Slew Rate Limited (1 ns min 80% to 20%)
? TB5R2 Output Defaults to Logic 1 When Inputs Left Open or Shorted to VCC or GND
? ESD Protection HBM > 3 kV, CDM > 2 kV
? Operating Temperature Range: -40°C to 85°C
? Available in Gull-Wing SOIC (JEDEC MS-013, DW) and SOIC (D) Package
? APPLICATIONS
? Digital Data or Clock Transmission Over Balanced Lines