®
SP495
Quad Differential RS-485 Transceiver
s Pinout for SCSI Interface s Meets EIA-485 Standard for Multipoint Bus T...
®
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 Bi
CMOS 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
SP495V
16
cc OA3 OB3 15 14 13
OA4 OB4 12
R1 D1 D2
R2 D3
R3 D4
R4
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
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. E...