DS9639ACN National Semiconductor, DS9639ACN Datasheet - Page 4

• Manufacturer Part Number: DS9639ACN
• Description: IC DUAL DIFFERTL LINE RECVR 8DIP
• Manufacturer: National Semiconductor
• Type: Line Receiverr

Specifications of DS9639ACN

• Number Of Drivers/receivers: 0/2
• Protocol: RS232, RS422, RS423
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Through Hole
• Package / Case: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DS9639ACN

www.national.com
AC Test Circuit and Switching Time Waveform
C
All diodes are FD700 or equivalent.
Typical Applications
R
R
L
t
t
combined with input impedance of receivers must be greater than 90 .
includes jig and probe capacitance.
50
FIGURE 4. AC Test Circuit and Waveforms
for RS-422 operation.
FIGURE 6. RS-422 System Application (FIPS 1020) Differential Simplex Bus Transmission
DS009623-5
4
V
Amplitude: 1.0V
Offset: 0.5V
Pulse Width: 500 ns
PRR: 1 MHz
t
r
I
= t
f
5.0 ns
FIGURE 5.
DS009623-7
DS009623-6