DS78C120  Product Folder

The DS78C120 is a high performance, dual differential, CMOS compatible line receiver for both balanced and unbalanced digital data transmission. The inputs are compatible with EIA, Federal and MIL standards.

Input specifications meet or exceed those of the popular DS7820 line receiver.

The line receiver will discriminate a ±200 mV input signal over a common-mode range of ±10V and a ±300 mV signal over a range of ±15V.

Circuit features include hysteresis and response control for applications where controlled rise and fall times and/or high frequency noise rejection are desirable. Threshold offset control is provided for fail-safe detection, should the input be open or short. Each receiver includes a 180 Ohm terminating resistor and the output gate contains a logic strobe for time discrimination. The DS78C120 is specified over a -55°C to +125°C temperature range.

• Full compatibility with EIA Standards RS232-C, RS422 and RS423, Federal Standards 1020, 1030 and MIL-188-114
• Input voltage range of ±15V (differential or common-mode)
• Separate strobe input for each receiver
• 1/2 V_CC strobe threshold for CMOS compatibility
• 5k typical input impedance
• 50 mV input hysteresis
• 200 mV input threshold
• Operation voltage range = 4.5V to 15V
• Separate fail-safe mode