SP504 Datasheet, PDF (1/32 Pages) Sipex Corporation – WAN Multi-Mode Serial Transceiver

SP504
WAN Multi-Mode Serial Transceiver
• +5V Only
• Seven (7) Drivers and Seven (7) Receivers
• Driver and Receiver Tri-State Control
• Reduced V.35 Termination Network
• Pin Compatible with the SP503
• Software Selectable Interface Modes:
-RS-232E (V.28)
-RS-422A (V.11, X.21)
-RS-449 (V.11 & V.10)
-RS-485
-V.35
-EIA-530 (V.11 & V.10)
-EIA-530A (V.11 & V.10)
RxD 1
RDEC₀ 2
RDEC₁ 3
RDEC₂ 4
RDEC₃ 5
TTEN 6
SCTEN 7
N/C 8
TDEC₃ 9
TDEC₂ 10
TDEC₁ 11
TDEC₀ 12
DTR 13
TxD 14
TxC 15
RTS 16
RL 17
V35_STAT 18
DCD 19
RxC 20
-V.36
SP504
60 GND
59 SD(b)
58 TR(a)
57 GND
56 TR(b)
55 V_CC
54 RS(a)
53 GND
52 RS(b)
51 LL(a)
50 GND
49 LL(b)
48 V_CC
47 RL(a)
46 GND
45 RL(b)
44 ST(b)
43 GND
42 ST(a)
41 V_CC
DESCRIPTION
The SP504 is a single chip device that supports eight (8) physical serial interface standards
for Wide Area Network connectivity. The SP504 is fabricated using a low power BiCMOS
process technology, and incorporates an Exar patented (5,306,954) charge pump allowing
+5V only operation. Seven (7) drivers and seven (7) receivers can be configured via soft-
ware for any of the above interface modes at any time. The SP504 is suitable for DTE-DCE
applications. The SP504 requires only one external resistor per V.35 driver for compliant
V.35 Operation.
SWITCHABLE V.35
TERMINATION RESISTOR
NETWORKS
22µF, 16V
22µF, 16V
RxD
RxC
CTS
DSR
DCD
RI
SCT
Vcc
22µF, 16V
C1+
Vdd
C1-
C2+
Programmable Charge Pump
Vss
C2-
22µF, 16V
RxD
TxD
RxC
DTR
CTS
SP504 RTS
DSR
RL
DCD
LL
RI
ST
TxD
DTR
RTS
RL
LL
ST
SCT
Receiver Decode
TT
Driver Decode
TT
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP504_102_121708