®
PRELIMINARY
SP1485E
Enhanced Low Power Half-Duplex
RS-485 Transceivers
■
+5V supply
■
Low Power BiCMOS
■
Driver/Receiver Enable for Multi-Drop
configurations
■
Available in 8 Pin NSOIC or PDIP
packages
■
Enhanced ESD Specifications:
+15KV Human Body Model
+15KV IEC1000-4-2 Air Discharge
+8KV IEC1000-4-2 Contact Discharge
RO
1
RE
2
DE
3
DI
4
8
VCC
SP1485E
8 Pin - nSOIC
7
B
6
A
5
GND
DESCRIPTION
The
SP1485E
is a half-duplex transceiver that meets the specifications of RS-485 and RS-
422 serial protocols with enhanced ESD performance. The ESD tolerance has been improved
on this device to over +15KV for both Human Body Model and IEC1000-4-2 Air Discharge
Method. This device is pin-to-pin compatible with Sipex's SP485 devices as well as popular
industry standards. As with the original version, the
SP1485E
features Sipex's BiCMOS
design allowing low power operation without sacrificing performance. The
SP1485E
meets
the requirements of the RS-485 and RS-422 protocols up to 20Mbps under load.
BLOCK DIAGRAM
RO 1
RE 2
DE 3
DI 4
R
8 Vcc
7B
6A
D
SP1485E
5 GND
Rev:C Date: 02/26/04
SP1485E Low Power Half-Duplex RS485 Transceivers
© Copyright 2004 Sipex Corporation
1
SIPEX [ SIPEX CORPORATION ]
