N8T14, SN55122, SN75122 TRIPLE LINE RECEIVERS

SLLS075B - SEPTEMBER 1973 - REVISED FEBRUARY 1993

features

• Designed for Digital Data Transmission Over Coaxial Cable, Strip Line, or Twisted Pair
• Designed for Operation With 50- to 500- Transmission Lines
• TTL Compatible
• Single 5-V Supply
• Built-Input Threshold Hysteresis
• High-Speed . . . Typical Propagation Delay Time = 20 ns
• Independent Channel Strobes
• Input Gating Increases Application Flexibility
• Fanout to 10 Series 54/74 Standard Loads
• Can Be Used With Dual Line Drivers SN55121 and SN75121
• Interchangeable With Signetics N8T14

description

The N8T14, SN55122, and SN75122 are triple line receivers that are designed for digital data transmission over lines having impedances from 50 to 500 . They are also compatible with standard TTL-logic and supply voltage levels.

The N8T14, SN55122, and SN75122 have receiver inputs with built-in hysteresis to provide increased noise margin for single-ended systems. The high impedance of this input presents a minimum load to the driver and allows termination of the transmission line in its characteristic impedance to minimize line reflection. An open line will affect the receiver input as would a low-level voltage. The receiver can withstand a level of -0.15 V with power on or off. The other inputs are in TTL configuration. The S input must be high to enable the receiver input. Two of the line receivers have A and B inputs that, if both are high, will hold the output low. The third receiver has only an A input that, if high, will hold the output low.

The SN55122 is characterized for operation over the full military temperature range of -55°C to 125°C. The N8T14 and SN75122 are characterized for operation from 0°C to 70°C.

View more information about generic part numbers:SN55122, SN75122

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