®
SP322
Programmable V.11/V.35 Transceiver
■
+5V Only Operation
■
Programmable V.11 or V.35 Selection
■
Three Differential V.11 Transceivers in
V.11 Mode
■
Three Differential V.35 Transceivers in
V.35 Mode
■
No External Resistor Termination for
Compliant V.35 Operation
■
V.11 Cable Termination (approx. 120Ω)
Internally Configured in V.11 Mode
■
Tri-State capability on drivers and
receivers
■
Ideal low cost solution for X.25 or Frame
Relay Serial Ports
38
37
42
40
39
36
43
EN_R2
EN_R3
R1IN(a)
R1IN(b)
R2IN(a)
R2IN(b)
R3IN(a)
R3IN(b)
T1IN
T2IN
T3IN
44
41
35
34
EN_R1
GND
VCC
GND
R3OUT
R2OUT
R1OUT
EN_T1
EN_T2
EN_T3
VCC
1
2
3
4
5
6
7
8
9
10
11
19
13
14
20
21
12
15
16
17
18
22
33
32
31
30
29
28
SP322
27
26
25
24
23
T1OUT(a)
T1OUT(b)
GND
VCC
T2OUT(a)
T2OUT(b)
GND
VCC
T3OUT(a)
T3OUT(b)
GND
Now Available in Lead Free Packaging
DESCRIPTION
The
SP322
is a programmable V.11 or V.35 transceiver IC. The
SP322
contains three drivers
and three receivers when selected in each mode. The selection is done by the V.11/V.35 select
pin. The V.11 transceivers can typically operate at 10Mbps while adhering to the ITU V.11
specifications. The V.35 transceivers can operate up to 10Mbps while adhering to the ITU V.35
specifications.
The
SP322
contains internal resistor termination for compliant V.35 operation as well as the V.11
termination on the receiver inputs for optional cable termination. Each
SP322
driver contains a
control pin which disables the output and places the output pins in a high impedance state. Each
receiver also has a control pin which places the receiver outputs in a high impedance state. The
enable pins will disconnect the internal termination network for whichever mode the
SP322
is
selected. For the receivers, the enable pin will place the input pins in a high impedance (approx.
15kΩ). This allows for convenient DTE-DCE configuration by connecting the driver outputs to
the receiver inputs, thus allowing the enable pins to select the desired DTE or DCE operation
V.35
WAN
EIA-530
SP322DS/06
Date: 10/1/05
SP322 V.11/V.35 Serial Transceiver
SP322 V.11/V.35 Serial Transceiver
1
V.11/V.35
V.11_TERM
SD
VCC
C1+
VDD
C2+
GND
C1–
C2–
VSS
© Copyright 1997 Sipex Corporation
© Copyright 2005 Sipex Corporation
SIPEX [ SIPEX CORPORATION ]
