®
SP495
Quad Differential RS-485 Transceiver
s
Pinout for SCSI Interface
s
Meets EIA-485 Standard for Multipoint
Bus Transmission
s
+5V-Only Power Supply Required
s
Receiver Fail-Safe Mode
s
Low Power BiCMOS Technology
s
Glitch-Free Power-Up/Down
s
Available in 20-Pin Plastic SOIC
s
Pin Compatible with DS36954
DESCRIPTION…
The
SP495
is a quad differential line driver/receiver meeting both RS-485 and RS-422
standards at data rates beyond 10Mbps. The
SP495
features three half-duplex transceivers
suitable for data bus connections and a fourth full-duplex transceiver with independent driver,
receiver enables. Ideal for use as a control bus transceiver. A complete SCSI initiator or target
interface can be implemented using five
SP495s.
Propagation Delay Skew is tightly specified
to aid in parallel interface designs. The
SP495
is available in a 20-pin plastic SOIC package
for operation over the commercial and industrial temperature ranges. For PLCC availability,
please consult factory.
OA1 OB1
20
19
OA2 OB2
18
17
SP495
V
16
cc OA3 OB3
15 14
13
OA4 OB4
12
R
1
D
1
D
2
R
2
D
3
R
3
D
4
R
4
2
1
3
4
11
GND
6
5
8
9
7
10
DR1 DE1/RE1
DR2 DE2/ RE2
DR3 DE3/ RE3
DI4 DE4
RO4 RE4
SP495
Quad Differential RS-485 Transceiver
© Copyright 2000 Sipex Corporation
1
SIPEX [ SIPEX CORPORATION ]
