DS9627 Datasheet, PDF (1/5 Pages) National Semiconductor (TI) – Dual Line Receiver

February 1996
DS9627
Dual Line Receiver
General Description
The DS9627 is a dual-line receiver which meets the electri-
cal interface specifications of EIA RS-232C and
MIL-STD-188C. The input circuitry accommodates ±25V in-
put signals and the differential inputs allow user selection of
either inverting or non-inverting logic for the receiver opera-
tion. The DS9627 provides both a selectable hysteresis
range and selectable receiver input resistance. When pin 1
is tied to V^−, the typical switching points are at 2.6V and
−2.6V, thus meeting RS-232-C requirements. When pin 1 is
open, the typical switching points are at 50 µA and −50 µA,
thus satisfying the requirements of MIL-STD-188C LOW
level interface. Connecting the RA and/or RB pins to the (−)
input yields an input impedance in the range of 3 kΩ to 7 kΩ
and satisfies RS-232-C requirements; leaving RA and/or RB
pins unconnected, the input resistance will be greater than
6 kΩ to satisfy MIL-STD-188C.
The output circuitry is TTL/DTL compatible and will allow
“collector-dotting” to generate the wired-OR function. A TTL/
DTL strobe is also provided for each receiver.
Features
n EIA RS-232-C input standards
n MIL-STD-188C input standards
n Variable hysteresis control
n High common mode rejection
n R control (5 kΩ or 10 kΩ)
n Wired-OR capability
n Choice of inverting and non-inverting inputs
n Outputs and strobe TTL compatible
Connection Diagram
16-Lead DIP
DS009761-1
Top View
Order Number DS9627MJ/883
See NS Package Number J16A
For Complete Military 883 Specifications, see RETS Data Sheet.
© 1999 National Semiconductor Corporation DS009761
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