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N8T14

Texas Instruments
Part Number N8T14
Manufacturer Texas Instruments
Description TRIPLE LINE RECEIVERS
Published Sep 3, 2019
Detailed Description N8T14, SN55122, SN75122 TRIPLE LINE RECEIVERS • Designed for Digital Data Transmission Over Coaxial Cable, Strip Line, ...
Datasheet PDF File N8T14 PDF File

N8T14
N8T14

Overview
N8T14, SN55122, SN75122 TRIPLE LINE RECEIVERS • Designed for Digital Data Transmission Over Coaxial Cable, Strip Line, or Twisted Pair • Designed for Operation With 50-Ω to 500-Ω Transmission Lines • TTL Compatible • Single 5-V Supply • Built-Input Threshold Hysteresis • High-Speed .
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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 SLLS075B – D1334, SEPTEMBER 1973 – REVISED FEBRUARY 1993 SN55122 .
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J PACKAGE N8T14, SN75122 .
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D OR N PACKAGE (TOP VIEW) 1A 1B 2R 2S 2A 2B 2Y GND 1 2 3 4 5 6 7 8 16 VCC 15 1S 14 1R 13 1Y 12 3A 11 3S 10 3R 9 3Y SN55122 .
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FK PACKAGE (TOP VIEW) 1B 1A NC VCC 1S 2R 3 2 1 20 19 4 18 1R 2S 5 17 1Y NC 6 16 NC 2A 7 15 3A 2B 8 14 3S 9 10 11 12 13 2Y GND NC 3Y 3R The N8T14, SN55122, and SN75122 are triple line receivers that are designed for digital data transmission over lines having impedances from 50 Ω to 500 Ω.
They are also compatible with standard TTL-logic and supply voltage levels.
NC – No internal connection THE N8T14 AND SN75122 ARE NOT RECOMMENDED FOR NEW DESIGN 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.
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