SP522 Datasheet, PDF (1/23 Pages) Sipex Corporation – Low-Cost Programmable Multi-Protocol Transceivers

®
SP522/SP524
Low-Cost Programmable
Multi-Protocol Transceivers
■ SP522 — 2 Drivers and 2 Receivers
■ SP524 — 4 Drivers and 4 Receivers
■ Driver and Receiver Tri-State Control
■ Low-Cost WAN Solution
■ Loopback Function for Diagnostics
■ Software Selectable Interface Modes:
-RS-232 (V.28), RS-423 (V.10)
-RS-422 (V.11, X.21), RS-485
DESCRIPTION
The SP522/524 is a monolithic device that supports three serial interface standards for Wide
Area Network Connectivity. The SP522/524 is ideally suited for multi-protocol designs that are
cost and space sensitive. The SP522/524 is fabricated using a low power BiCMOS process
technology. Two (2) drivers and two (2) receivers for the SP522 can be configured via software
for any of the above interface modes at any time. The SP524 offers two (2) additional drivers
and two (2) additional receivers.
VDD
+5V
1N5819
VSS
10µF
10µF
21
VDD
13
VCC
22
VSS
10µF
+
SP522
8
LATCH_EN
DP0
2
7
DECODER LOGIC
LOOPBCK
DP1
23
10
T1IN
6
ENT1
9
T2IN
4
ENT2
1
R1OUT
5
ENR1
24
R2OUT
3
ENR2
T1
T2
R1
R2
14 GND
T1OUTA
11
T1OUTB
12
T2OUTA
15
T2OUTB
16
R1INA
18
R1INB
17
R2INA
20
R2INB
19
VDD
+5V
IN5819
10µF
10µF
VSS
31
DP0
32
DP1
28 2 14 19 29
VDD VCC VCC VCC VSS
10µF
+
SP524
DECODER LOGIC
LATCH_EN
30
LOOPBCK
23
24
T1IN
36
ENT1
25
T2IN
35
ENT2
44
R1OUT
40
ENR1
43
R2OUT
39
ENR2
26
T3IN
34
ENT3
27
T4IN
33
ENT4
42
R3OUT
38
ENR3
41
R4OUT
37
ENR4
T1
T2
R1
R2
T1OUTA
22
T1OUTB
20
T2OUTA
18
T2OUTB
17
R1INA
3
R1INB
4
R2INA
5
R2INB
6
T3
T4
R3
R4
T3OUTA
16
T3OUTB
15
T4OUTA
13
T4OUTB
11
R3INA
7
R3INB
8
R4INA
9
R4INB
10
GND
1
GND
12
GND
21
Rev. 7/10/03
SP522 Multi–Mode Serial Transceivers
1
© Copyright 2003 Sipex Corporation