SN75140

SN75140 DUAL LINE RECEIVER D Single 5-V Supply D ±100-mV Sensitivity D For Application as: – Single-Ended Line Receiver – Gated Oscillator – Level Comparator D Adjustable Reference Voltage D TTL Outputs D TTL-Compatible Strobe D Designed for Party-Line (Data-Bus) Applications D Common Reference-Voltage Pin D Common Strobe SLLS080C – JANUARY 1977 – REVISED APRIL 1998 P OR PS† PACKAGE (TOP VIEW) 1OUT 1 COMSTRB 2 1LINE 3 GND 4 8 VCC 7 2OUT 6 COMREF 5 2LINE † The PS package is only available left-ended taped and reeled (order SN75140 PSR). description This device consists of a dual single-ended line receiver with TTL-compatible strobes and outputs. The reference voltage (switching threshold) is applied externally and can be adjusted from 1.5 V to 3.5 V, making it possible to optimize noise immunity for a given system design. Due to the low input current (less than 100 µA), the device is suited ideally for party-line (data-bus) systems. The SN75140 has a common reference-voltage pin and a common strobe. The SN75140 is characterized for operation from 0°C to 70°C. logic symbol‡ FUNCTION TABLE (each receiver) LINE INPUT STROBE OUTPUT ≤ Vref – 100 mV L H ≥ Vref + 100 mV X L X H L H = high level, L = low level, X = irrelevant 2 COMSTRB 3 1LINE COMREF 6 5 2LINE ≥1 1 1OUT ≥1 7 2OUT ‡ This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Please be aware that an important notice concerning availability, standard warranty, and use ...