SP495 Datasheet, PDF (1/6 Pages) Sipex Corporation – Quad Differential RS-485 Transceiver

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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 _SP495V
18 17
16
cc OA3 OB3
15 14
OA4 OB4
13 12
R₁
R₂
R₃
R₄
D₁
D₂
D₃
D₄
2
1
DR1 DE1/RE1
3
4
11
DR2 DE2/ RE2 GND
6
5
DR3 DE3/ RE3
8
9 7 10
DI4 DE4 RO4 RE4
SP495
Quad Differential RS-485 Transceiver
1
© Copyright 2000 Sipex Corporation