SP320
RCOUT1
61 DRA1
62 VCC
63 DRA3
64 GND
65 DRB3
66 R1IN
67 NC
68 R2IN
69 NC
70 RCA1
71 RCB1
72 GND
73 VCC
74 NC
75 NC
76 RCA3
77 RCB3
78 R2OUT
5Mbps Data Throughput
+5V-Only, Single Supply Operation
3 Drivers, 3 Receivers – V.35
4 Drivers, 4 Receivers – RS-232
80-pin LQFP Surface Mount Packaging
Pin Compatible with SP319
80 R1OUT
•
•
•
•
•
•
79 RCOUT3
Complete +5V-Only V.35 Interface
with RS-232 (V.28) Control Lines
1
60 GND
NC 2
59 DRB1
TS000 3
NC
58 T1OUT
4
57 NC
NC 5
56 NC
TTEN
6
RTEN
7
NC
8
ENV35
9
55 NC
54 T2OUT
NC 11
53 NC
SP320
NC 10
52 NC
51 T4OUT
50 NC
NC 12
49 NC
T1IN 13
48 NC
DRIN1 14
47 T3OUT
DRIN3 15
46 NC
T2IN 16
45 NC
T3IN 17
44 DRB2
NC 18
43 GND
R3OUT 19
42 DRA2
NC 40
R4IN 39
RCB2 38
RCA2 37
NC 36
R3IN 35
GND 34
VCC 33
VSS 32
GND 29
C1– 30
C2– 31
VDD 27
C2+ 28
VCC 25
C1+ 26
T4IN 24
STEN 23
DRIN2 22
41 VCC
ROUT4 21
RCOUT2 20
Note: NC (No Connection) pins should be left floating.
Internal signals may be present.
description
The SP320 is a complete V.35 interface transceiver offering 3 drivers and 3 receivers of V.35,
and 4 drivers and 4 receivers of RS-232 (V.28). An Exar patented charge pump allows +5V
only low power operation. RS-232 drivers and receivers are specified to operate at 120kbps,
all V.35 drivers and receivers operate up to 5Mbps.
+5V
+
26
0.1µF
0.1µF
+
+5V
25, 33, 41, 62, 73
C1+
30 C128 C2+
31
VCC
VDD
SP320
Vcc
100Ω
Vcc
400kΩ
Vcc
100Ω
R1IN 66
Vcc
5kΩ
Vcc
5kΩ
Vcc
5kΩ
R4OUT 21
47 T3OUT
51 T4OUT
42 DRA2
5kΩ
Vcc
RCA3 76
RCOUT3 79
54 T2OUT
22 DRIN2
400kΩ
R4IN 39
58 T1OUT
24 T4IN
400kΩ
R3IN 35
R3OUT 19
59 DRB1
13 T1IN
17 T3IN
400kΩ
R2IN 68
61 DRA1
16 T2IN
400kΩ
RCB2 38
R2OUT 78
14 DRIN1
400kΩ
RCB1 71
RCA2 37
R1OUT 80
0.1µF
3 TS000
9 ENV35
RCOUT2 20
+
0.1µF
C2-
RCA1 70
RCOUT 1
VSS
+
27
32
400kΩ
44 DRB2
23 STEN
15 DRIN3
63 DRA3
100Ω
65 DRB3
6 TTEN
RTEN 7
RCB3 77
29, 34, 43, 60, 64, 72
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
SP320_100_092208
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the
specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
VCC.....................................................................................................+7V
Input Voltages
Logic...................................................-0.3V to (VCC+0.5V)
Drivers................................................-0.3V to (VCC+0.5V)
Receivers...............................................±30V at ≤100mA
Output Voltages
Logic...................................................-0.3V to (VCC+0.5V)
Drivers.......................................................................±14V
Receivers............................................-0.3V to (VCC+0.5V)
Storage Temperature.......................................................-65˚C to +150
Power Dissipation.....................................................................1500mW
Package Derating
ØJC.......................................................................16 °C/W
ØJA.......................................................................46 °C/W
TMIN to TMAX and Vcc = 5V +/-5% unless otherwise noted.
PARAMETER
MIN.
TYP.
ELECTRICAL CHARACTERISTICS
MAX.
UNITS
0.8
Volts
CONDITIONS
V.35 Driver
TTL Input Level VIL
TTL Input Level VIH
2.0
Volts
Voltage Outputs
Differential Outputs
±0.44
±0.55
±0.66
Volts
RL = 100Ω from A to B
Source Impedance
50
100
150
Ohms
Short Circuit Impedance
135
150
165
Ohms
Measured from A=B to GND,
VOUT = -2V to +2V
Voltage Output Offset
-0.6
+0.6
Volts
VOFFSET = (|VA| + |VB|)/ 2
AC Characteristics
Transition Time
Maximum Transmission Rate
40
ns
5
Rise/Fall time, 10% to 90%
Mbps
RL = 100Ω, VDIFF OUT = 0.55V+/-20%
Propagation Delay tPHL
150
250
ns
Measured from 1.5V of VIN to 50%
of VOUT
Propagation Delay tPLH
150
250
ns
Measured from 1.5V of VIN to 50%
of VOUT
0.4
Volts
IOUT = -3.2mA
Volts
IOUT = 1.0mA
V.35 Receiver
TTL Output levels
VOL
VOH
2.4
Receiver Inputs
Differential Input Threshold
+0.3
Volts
Input Impedance
-0.3
90
100
110
Ohms
Short circuit Impedance
135
150
165
Ohms
Measured from A=B to GND,
VIN = -2V to +2V
Mbps
VIN = +/-0.55V +/-20%
AC Characteristics
Maximum Transmission Rate
5
Propagation Delay tPHL
150
250
ns
Measured from 50% of VIN to 1.5V
of ROUT
Propagation Delay tPLH
150
250
ns
Measured from 50% of VIN to 1.5V
of ROUT
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
SP320_100_092208
ELECTRICAL CHARACTERISTICS
TMIN to TMAX and Vcc = 5V +/-5% unless otherwise noted.
PARAMETER
MIN.
TYP.
MAX.
UNITS
0.8
Volts
CONDITIONS
RS-232 DRIVER
TTL Input Level VIL
TTL Input Level VIH
2.0
Volts
Voltage Outputs
High Level Output
+5.0
+15.0
Volts
RL = 3kΩ to GND
Low Level Output
-15.0
-5.0
Volts
RL = 3kΩ to GND
Open Circuit Voltage
-15.0
+15.0
Volts
RL = ∞
Short Circuit Current
-100
+100
mA
Power Off Impedance
300
Ohms
RL = GND
Vcc = 0V: VOUT = +/-2V
AC Characteristics
Slew Rate
Maximum Transmission Rate
30
120
Transition Time
V/µs
RL = 3kΩ, CL = 50pF; From +3V to
-3V or -3V to +3V, TA = 25°C,
Vcc = +5V
kbps
RL = 3kΩ, CL = 2500pF
1.56
µs
Rise/fall time between +/-3V
RL = 3kΩ, CL = 2500pF
Propagation Delay tPHL
2
8
µs
RL = 3kΩ, CL = 2500pF; from 1.5V of
TIN to 50% of VOUT
Propagation Delay tPLH
2
8
µs
RL = 3kΩ, CL = 2500pF; from 1.5V of
TIN to 50% of VOUT
0.4
Volts
RS-232 RECEIVER
TTL Output level Low VOL
TTL Output level High VOH
2.4
Volts
Receiver Input
Input Voltage Range
-15
High Threshold
1.7
Low Threshold
0.8
1.2
Hysteresis
0.2
0.5
+15
Volts
3.0
Volts
Volts
1.0
Volts
+2.0V
Volts
5
7
kOhms
Propagation Delay tPHL
0.1
1
µs
Measured from 50% of RIN to 1.5V
of ROUT
Propagation Delay tPLH
0.1
1
µs
Measured from 50% of RIN to 1.5V
of ROUT
No Load Vcc Supply Current
35
70
mA
No Load; Vcc = 5.0V; TA = 25°C
Full Load Vcc Supply Current
60
mA
RS-232 Drivers RL = 3kΩ to GND;
DC Input
V.35 Drivers RL = 100Ω from A to B;
DC input
Shutdown Current
1.5
mA
TS000 = ENV35 = 0V
Receiver Input Circuit Bias
Input Impedance
3
Vcc = 5V; TA = 25°C
VIN = +/-15V
AC Characteristics
Maximum Transmission Rate
120
kbps
Power Requirements
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
SP320_100_092208
THEORY OF OPERATION
±10Ω.
The SP320 is a single chip +5V-only serial
transceiver that supports all the signals
necessary to implement a full V.35 interface.
Three V.35 drivers and three V.35 receivers
make up the clock and data signals. Four
RS-232 (V.28) drivers and four RS-232 (V.28)
receivers are used for control line signals for
the interface.
2. Resistance to ground of 150Ω ±15Ω,
measured from short-circuited terminals.
All of the V.35 receivers can operate at data
rates as high as 5Mbps. The sensitivity of
the V.35 receiver inputs is ±300mV.
RS-232 (V.28) Drivers
The RS-232 drivers are inverting transmitters, which accept either TTL or CMOS
inputs and output the RS-232 signals with
an inverted sense relative to the input logic
levels. Typically, the RS-232 output voltage
swing is ±9V with no load, and ±5V minimum
with full load. The transmitter outputs are
protected against infinite short-circuits to
ground without degradation in reliability.
V.35 Drivers
The V.35 drivers are +5V-only, low power
voltage output transmitters. The drivers do
not require any external resistor networks,
and will meet the following requirements:
1. Source impedance in the range of 50Ω
to 150Ω.
2. Resistance between short-circuited terminals and ground is 150Ω ±15Ω.
In the power off state, the output impedance of the RS-232 drivers will be greater
than 300Ω over a ±2V range. Should the
input of a driver be left open, an internal
400kΩ pullup resistor to VCC forces the
input high, thus committing the output to
a low state. The slew rate of the transmitter output is internally limited to a
maximum of 30V/µs in order to meet the EIA
standards. The RS-232 drivers are rated for
120kbps data rates.
3. When terminated with a 100Ω resistive
load the terminal to terminal voltage will be
0.55 Volts ±20% so that the A terminal is
positive to the B terminal when binary 0 is
transmitted, and the conditions are reversed
to transmit binary 1.
4. The arithmetic mean of the voltage of the
A terminal with respect to ground, and the B
terminal with respect to ground will not
exceed 0.6 Volts when terminated as in 3
above.
RS-232 (V.28) Receivers
The RS-232 receivers convert RS-232
input signals to inverted TTL signals. Each
of the four receivers features 500mV of
hysteresis margin to minimize the effects
of noisy transmission lines. The inputs also
have a 5kΩ resistor to ground; in an open
circuit situation the input of the receiver
will be forced low, committing the output
to a logic high state. The input resistance
will maintain 3kΩ-7kΩ over a ±15V range.
The maximum operating voltage range for the
receiver is ±30V, under these conditions the
input current to the receiver must be limited
to less than 100mA. The RS-232 receivers
can operate to beyond 120kbps.
The V.35 drivers can operate at data rates
as high as 5Mbps. The driver outputs are
protected against short-circuits between
the A and B outputs and short circuits to
ground.
Two of the V.35 drivers, DRIN2 and DRIN3
are equipped with enable control lines. When
the enable pins are high the driver outputs are
disabled, the output impedance of a disabled
driver will nominally be 300Ω. When the enable pins are low, the drivers are active.
V.35 Receivers
The V.35 receivers are +5V only, low power
differential receivers which meet the following requirements:
CHARGE PUMP
The charge pump is an Exar patented design
(U.S. 5,306,954) and uses a unique approach
compared to older less-efficient designs.
The charge pump still requires four external
1. Input impedance in the range of 100Ω
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
SP320_100_092208
Phase 4
-Vdd transfer- The fourth phase of the clock
connects the negative terminal of C2 to
ground and transfers the generated +10V
across C2 to C4, the Vdd storage capacitor.
Again, simultaneously with this, the positive
side of capacitor C1 is switched to +5V and
the negative side is connected to ground,
and the cycle begins again.
+10V
a) C2+
GND
GND
b) C2–
–10V
Since both V+ and V- are separately generated from Vcc in a no load condition, V+and
V- will be symmetrical. Older charge pump
approaches that generate V- from V+ will
show a decrease in the magnitude of V- compared to V+ due to the inherent inefficiencies
in the design.
Figure 1. Charge Pump Waveforms
capacitors, but uses a four-phase voltage
shifting technique to attain symmetrical ±10V
power supplies. The capacitors can be as low
as 0.1µF with a 16 Volt rating. Polarized or
non-polarized capacitors can be used.
The clock rate for the charge pump typically
operates at 15kHz. The external capacitors must be 0.1µF with a 16V breakdown
rating.
Figure 1(a) shows the waveform found on
the positive side of capacitor C2, and Figure
1(b) shows the negative side of capacitor C2.
There is a free-running oscillator that controls
the four phases of the voltage shifting. A
description of each phase follows.
Shutdown Mode
The SP320 can be put into a low power
shutdown mode by bringing both TS000 (pin
3) and ENV35 (pin 9) low. In shutdown mode,
the SP320 will draw less than 2mA of supply
current. For normal operation, both pins
should be connected to +5V.
Phase 1
-Vss charge storage- During this phase of
the clock cycle, the positive side of capactors
C1 and C2 are initially charged to +5V. C1+
is then switched to ground and the charge in
C1- is transferred to C2-. Since C2+ is connected to +5V, the voltage potential across
capacitor C2 is now 10V.
External Power Supplies
For applications that do not require +5V only,
external supplies can be applied at the V+
and V- pins. The value of the external supply
voltages must be no greater than ±10V.
The current drain from the ±10V supplies is used for the RS-232 drivers.
For the RS-232 driver the current requirement will be 3.5mA per driver.
It is critical the external power supplies
provide a power supply sequence of : +10V,
+5V, and then -10V.
Phase 2
-Vss transfer- Phase two of the clock connects the negative terminal of C2 to the Vss
storage capacitor and the positive terminal
of C2 to ground, and transfers the generated
-10V to C3. Simultaneously, the positive side
of capacitor C1 is switched to +5V and the
negative side is connected to ground.
Applications Information
The SP320 is a single chip device that can implement a complete V.35 interface. Three (3)
V.35 drivers and three (3) V.35 receivers are
used for clock and data signals and four (4)
RS-232 (V.28) drivers and four (4) RS-232
(V.28) receivers can be used for the control
signals of the interface. The following examples show the SP320 configured in either
a DTE or DCE application.
Phase 3
-Vdd charge storage- The third phase of
the clock is identical to the first phase- the
transferred charge in C1 produces -5V in
the negative terminal of C1, which is applied
to the negative side of capacitor C2. Since
C2+ is at +5V, the voltage potential across
C2 is +10V.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
SP320_100_092208
VCC = +5V
VCC = +5V
C4
+10V
C1
+
–
C2
+
–
+
–
VDD Storage Capacitor
–
+
VSS Storage Capacitor
C1
C3
–
VDD Storage Capacitor
–
+
VSS Storage Capacitor
C3
–5V
VCC = +5V
C4
–
–
+
Figure 3. Charge Pump Phase 2
VCC = +5V
C1
+
C2
–
–5V
Figure 2. Charge Pump Phase 1
+
C4
+5V
+
C2
+
+
–
–
+
–
C1
VSS Storage Capacitor
C3
–10V
+
50Ω
1µF
T
=
V.35
1µF
DX
T
DX
T
RX
T
T
RX
T
U
TXC (114)
AA
W
Y
RXC (115)
V
A
GND (102)
RX
T
RX
T
DX
T
DX
T
DX
T
R
CABLE SHIELD
T
B
VCC2
A
1µF
1µF
1µF
1µF
OPTIONAL SIGNALS
DX
DX
1µF
1µF
1µF
RS-232
RX
1µF
X
V
TXD (104)
R
B
VCC1
RX
VSS Storage Capacitor
C3
P
S
Y
T
RX
VVDD
ge Capacito
r
Storage
Capacitor
DDStora
VCC2
5V
SCTE (113)
W
X
RX
TXD (103)
S
AA
RX
–
V.35
U
DX
–
+
1µF
1µF
1µF
P
DX
–
+
–5V
125Ω
50Ω
1µF
+
Figure 5. Charge Pump Phase 4
VCC1
5V
1µF
C2
–
–5V
Figure 4. Charge Pump Phase 3
1µF
C4
+5V
VDD Storage Capacitor
RS-232
H
C
E
D
F
NN
N
L
DTR (108)
RTS (105)
DSR (107)
CTS (106)
DCD (109)
TM (142)
RDL (140)
LLB (141)
ISO 2593
34-PIN DTE/DCE
INTERFACE
CONNECTOR
H
C
E
D
F
NN
N
L
RX
RX
DX
DX
DX
DX
RX
RX
ISO 2593
34-PIN DTE/DCE
INTERFACE
CONNECTOR
Figure 6. A Competitor’s Typical V.35 Solution Using Six Components.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
SP320_100_092208
+5V
0.1µF
28
C2+
0.1µF
31
C2-
25
V CC
+5V
1N5819
0.1µF
27 26 30
V DD C1+ C1- 32
V SS
0.1µF
28
0.1µF
C2+
SP320 (DTE)
DR IN 1
14
15
P
S
TxC (113)
U
DR IN 3
U
W
W
A
79
RC OUT2
20
1
Y
RxC (115)
X
V
RxD (104)
R
DTR (108)
RTS (105)
RL (140)
N
LL (141)
L
R1 OUT
80
DSR (107)
E
N
R4 OUT
21
L
R3 OUT
19
F
R4 OUT
NN
E
CTS (106)
D
R3 OUT
19
D
DCD (109)
F
TM (142)
NN
21
B
29, 34, 43, 60, 64, 72
R2 OUT
R1 OUT
80
24
78
DR IN1
14
C
17
R2 OUT
DR IN 3
15
78
C
T4 IN
DR IN 2
22
H
13
T3 IN
RC OUT2
20
T
R
16
T1 IN
RC OUT1
1
X
V
H
T2 IN
27 26 30
V CC V DD C1+ C1- 32 0.1µF
VSS
RC OUT3
AA
AA
T
RC OUT1
25
79
TxCC (114)
Y
RC OUT3
C2-
A
DR IN 2
22
31
1N5819
0.1µF
SP320 (DCE)
TxD (103)
P
S
0.1µF
16
T2 IN
T1 IN
13
17
24
T3 IN
T4 IN
B
ISO2593
34-PIN DCE
INTERFACE CONNECTOR
ISO2593
34-PIN DTE
INTERFACE CONNECTOR
29, 34, 43, 60, 64, 72
Figure 7. Typical DTE-DCE V.35 Connection with the SP320
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
SP320_100_092208
ISO-2593 connector pin out
Signal Ground
Clear to Send
Data Carrier Detect
Ring Indicator
Local Loopback
Remote Loopback
Receive Data (A)
Receive Data (B)
Receive Timing (A)
Receive Timing (B)
Unassigned---
Unassigned---
Unassigned---
Unassigned---
Unassigned---
Unassigned---
Test Mode
A
C
E
H
K
M
P
S
U
W
Y
AA
CC
EE
HH
KK
MM
B
D
F
J
L
N
R
T
V
X
Z
BB
DD
FF
JJ
LL
NN
Typical DCE V.35 interface
+5V
0.1 µF
+
26
25, 33, 41, 62, 73
C1+
30
+
0.1 µF
+5V
C128 C2+
VCC
SP320
103(B)
113(A)
RCOUT 1
RCOUT2 20
100Ω
RTS
R1OUT 80
DTR
R2OUT 78
108
400kΩ
Vcc
5kΩ
Vcc
5kΩ
400kΩ
Vcc
RLPBK
141
5kΩ
LLPBK
R4OUT 21
SPARE
RCOUT3 79
5kΩ
Vcc
RCA3 76
400kΩ
100Ω
RTEN 7
RCB3 77
107
DCD
47 T3OUT
109
RI
51 T4OUT
22 DRIN2
400kΩ
R4IN 39
SPARE
SPARE
R3OUT 19
106
DSR
54 T2OUT
24 T4IN
R3IN 35
104(B)
CTS
58 T1OUT
17 T3IN
400kΩ
104(A)
59 DRB1
16 T2IN
400kΩ
RXD
61 DRA1
13 T1IN
Vcc
100Ω
R2IN 68
140
0.1 µF
+
14 DRIN1
Vcc
R1IN 66
105
0.1 µF
Vcc
RCB2 38
113(B)
32
400KΩ
RCB1 71
RCA2 37
TXC
VSS
+
27
3 TS000
RCA1 70
TXD
VDD
31 C2-
9 ENV35
103(A)
Chasis Ground
Request to Send
DCE Ready (DSR)
DTE Ready (DTR)
Unassigned---
Unassigned---
Transmitted Data (A)
Transmitted Data (B)
Terminal Timing (A) } 113(A)
Terminal Timing (B) } 113(B)
Transmit Timing (A) } 114(A)
Transmit Timing (B) } 114(B)
Unassigned---
Unassigned---
Unassigned---
Unassigned---
Unassigned---
125
TXCC
42 DRA2
114(A)
44 DRB2
23 STEN
114(B)
15 DRIN3
RXC
63 DRA3
115(A)
65 DRB3
115(B)
6 TTEN
29, 34, 43, 60, 64, 72
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
SP320_100_092208
ISO-2593 connector pin out
Signal Ground
Clear to Send
Data Carrier Detect
Ring Indicator
Local Loopback
Remote Loopback
Receive Data (A)
Receive Data (B)
Receive Timing (A)
Receive Timing (B)
Unassigned---
Unassigned---
Unassigned---
Unassigned---
Unassigned---
Unassigned---
Test Mode
A
C
E
H
K
M
P
S
U
W
Y
AA
CC
EE
HH
KK
MM
B
D
F
J
L
N
R
T
V
X
Z
BB
DD
FF
JJ
LL
NN
Typical DTE V.35 interface
+5V
+
26
0.1µF
0.1µF
25, 33, 41, 62, 73
C1+
30
+
C128 C2+
VCC
VDD
SP320
TXCC
114(B)
RCB2 38
106
R1IN 66
R1OUT 80
107
DSR
109
100Ω
400kΩ
Vcc
100Ω
Vcc
5kΩ
Vcc
5kΩ
Vcc
125
RXC
Vcc
RCA3 76
RCOUT3 79
115(B)
5kΩ
400kΩ
100Ω
RTEN 7
RCB3 77
108
RLPBK
47 T3OUT
140
LLPBK
51 T4OUT
22 DRIN2
400kΩ
R4IN 39
R4OUT 21
115(A)
5kΩ
105
DTR
54 T2OUT
24 T4IN
400kΩ
103(B)
RTS
58 T1OUT
17 T3IN
400kΩ
103(A)
59 DRB1
16 T2IN
400kΩ
TXD
61 DRA1
13 T1IN
R3IN 35
R3OUT 19
RI
0.1µF
14 DRIN1
Vcc
R2IN 68
R2OUT 78
DCD
+
0.1µF
Vcc
RCB1 71
RCA2 37
RCOUT2 20
CTS
32
400kΩ
RCA1 70
RCOUT 1
104(B)
114(A)
+
31 C2-
9 ENV35
RXD
VSS
27
3 TS000
+5V
104(A)
Chasis Ground
Request to Send
DCE Ready (DSR)
DTE Ready (DTR)
Unassigned---
Unassigned---
Transmitted Data (A)
Transmitted Data (B)
Terminal Timing (A) } 113(A)
Terminal Timing (B) } 113(B)
Transmit Timing (A) } 114(A)
Transmit Timing (B) } 114(B)
Unassigned---
Unassigned---
Unassigned---
Unassigned---
Unassigned---
141
TXCT
42 DRA2
113(A)
44 DRB2
23 STEN
113(B)
15 DRIN3
SPARE
63 DRA3
SPARE
65 DRB3
SPARE
6 TTEN
29, 34, 43, 60, 64, 72
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
SP320_100_092208
61 DRA1
62 VCC
63 DRA3
64 GND
65 DRB3
66 R1IN
67 NC
68 R2IN
69 NC
70 RCA1
71 RCB1
72 GND
73 VCC
74 NC
75 NC
76 RCA3
77 RCB3
78 R2OUT
79 RCOUT3
80 R1OUT
Pin configuration
RCOUT1 1
60 GND
NC 2
59 DRB1
TS000 3
58 T1OUT
NC 4
57 NC
NC 5
56 NC
TTEN 6
55 NC
RTEN 7
54 T2OUT
NC 8
53 NC
SP320
ENV35 9
NC 10
NC 11
52 NC
51 T4OUT
50 NC
NC 12
49 NC
T1IN 13
48 NC
DRIN1 14
47 T3OUT
DRIN3 15
46 NC
T2IN 16
45 NC
T3IN 17
44 DRB2
NC 18
43 GND
R3OUT 19
42 DRA2
NC 40
R4IN 39
RCB2 38
RCA2 37
NC 36
R3IN 35
GND 34
VCC 33
VSS 32
2
GND 29
C1– 30
C – 31
VDD 27
C2+ 28
VCC 25
C1+ 26
T4IN 24
STEN 23
DRIN2 22
41 VCC
ROUT4 21
RCOUT2 20
Note: NC (No Connection) pins should be left floating.
Internal signals may be present.
Typical application circuit
+5V
+
26
0.1µF
0.1µF
+
+5V
25, 33, 41, 62, 73
C1+
30 C128 C2+
31
VCC
VDD
SP320
100Ω
14 DRIN1
Vcc
400kΩ
Vcc
100Ω
R1IN 66
Vcc
5kΩ
Vcc
5kΩ
Vcc
5kΩ
R4OUT 21
47 T3OUT
51 T4OUT
42 DRA2
5kΩ
Vcc
RCA3 76
RCOUT3 79
54 T2OUT
22 DRIN2
400kΩ
R4IN 39
58 T1OUT
24 T4IN
400kΩ
R3IN 35
R3OUT 19
59 DRB1
13 T1IN
17 T3IN
400kΩ
R2IN 68
61 DRA1
16 T2IN
400kΩ
RCB2 38
R2OUT 78
0.1µF
Vcc
400kΩ
RCB1 71
RCA2 37
R1OUT 80
+
3 TS000
9 ENV35
RCOUT2 20
32
0.1µF
C2-
RCA1 70
RCOUT 1
VSS
+
27
400kΩ
44 DRB2
23 STEN
15 DRIN3
63 DRA3
100Ω
65 DRB3
6 TTEN
RTEN 7
RCB3 77
29, 34, 43, 60, 64, 72
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
10
SP320_100_092208
Package: 80 Pin LQFP
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
11
SP320_100_092208
ORDERING INFORMATION
Model
Temperature Range
Package Types
SP320ACM-L................................................. 0˚C to +70˚C.........................80-pin JEDEC (BE-2 Outline) LQFP
DATE
REVSION
DESCRIPTION
03-23-07
Rev B
Legacy Sipex Data Sheet
9-22-08
1.0.0
SP320 is no longer available in MQFP package per PCN 07-1102-06a. Update
package drawing outline to show LQFP. Change to Exar data sheet format, update
ordering information and changed revision to 1.0.0.
Notice
EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for
illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked;
no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can
reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for
use in such applications unless EXAR Corporation receives, in writting, assurances to its satisfaction that: (a) the risk of injury or damage has been
minimized ; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Copyright 2008 EXAR Corporation
Datasheet September 2008
Send your Interface technical inquiry with technical details to: uarttechsupport@exar.com
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7017 • www.exar.com
12
SP320_100_092208
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