ChipFind - документация

Электронный компонент: SP431CP

Скачать:  PDF   ZIP
1
SP431DS/08 SP431 High Speed, +3.3V Quad RS-422 Differential Line Driver Copyright 1997 Sipex Corporation
High Speed, +3.3V Quad RS-422
Differential Line Driver
The SP431 is a quad differential line driver that meets the specifications of the EIA standard
RS-422 serial protocol. The SP431 features Sipex's BiCMOS process allowing low power
operational characteristics of CMOS technology while meeting all of the demands of the
RS-422 serial protocol over 60Mbps under load. The RS-422 protocol allows up to 10
receivers to be connected to a multipoint bus transmission line. The SP431 features a driver
enable control common to all four drivers and a tri-state output. Since the cabling can be as
long as 4,000 feet, the RS-422 drivers of the SP431 are equipped with a wide common-mode
output voltage range to accomodate ground potential differences.
s
Compatible with the EIA standard for
RS-422 serial protocol
s
Quad Differential Line Drivers
s
Tri-state Output Control
s
At Least 60Mbps Transmission Rates
s
6.0ns Typical Driver Propagation Delays
s
Less than 1ns Typical Output Skew
s
Single +3.3V Supply Operation
s
Common Driver Enable Control
s
Compatibility with the industry standard
26LV31
DESCRIPTION
ENABLE
ENABLE
DI4
DI3
DI2
DI1
DO
4
A DO
4
B DO
3
A DO
3
B DO
2
A DO
2
B DO
1
A DO
1
B
V
CC
GND
INPUTS
OUTPUTS
V
CC
DI2
1
2
3
4
13
14
5
6
7
D03A
D01A
D01B
ENABLE
D02B
D02A
D03B
DI1
ENABLE
D04B
D04A
DI4
8
9
GND
DI3
10
12
11
15
16
SP431
SP431
SIGNAL PROCESSING EXCELLENCE
2
SP431DS/08 SP431 High Speed, +3.3V Quad RS-422 Differential Line Driver Copyright 1997 Sipex Corporation
ABSOLUTE MAXIMUM RATINGS
V
CC
........................................................................................0.5V to 7.0V
V
IN
(DC Input Voltage).............................................-1.5V to (V
CC
+ 1.5V)
V
OUT
(DC Output Voltage)......................................................-0.5V to 7V
I
IK
, I
OK
(Clamp Diode Current)........................................................
20mA
I
OUT
(DC Output Current, per pin)................................................
150mA
I
CC
(DC V
CC
or GND Current, per pin)..........................................
150mA
T
STG
(Storage Temperature Range)...............................-65
C to +150
C
Storage Temperature....................................................-65
C to +150
C
Power Dissipation Per Package
16-pin PDIP (derate 14.3mW/
o
C above +70
o
C).........................1150mW
16-pin NSOIC (derate 13.6mW/
o
C above +70
o
C)......................1100mW
Figure 1. SP431 Block Diagram
ENABLE
ENABLE
DI4
DI3
DI2
DI1
DO
4
A DO
4
B DO
3
A DO
3
B DO
2
A DO
2
B DO
1
A DO
1
B
V
CC
GND
INPUTS
OUTPUTS
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 and cause permanent damage to the device.
3
SP431DS/08 SP431 High Speed, +3.3V Quad RS-422 Differential Line Driver Copyright 1997 Sipex Corporation
S
R
E
T
E
M
A
R
A
P
C
D
.
N
I
M
.
P
Y
T
.
X
A
M
S
T
I
N
U
S
N
O
I
T
I
D
N
O
C
,
e
g
a
t
l
o
V
y
l
p
p
u
S
V
C
C
0
.
3
6
.
3
V
,
e
g
a
t
l
o
V
t
u
p
t
u
O
r
o
t
u
p
n
I
C
D
V
N
I
V
r
o
T
U
O
V
C
C
V
s
c
i
t
s
i
r
e
t
c
a
r
a
h
C
l
a
c
i
r
t
c
e
l
E
t
u
p
n
I
t
,
s
e
m
i
T
ll
a
F
r
o
e
s
i
R
t
u
p
n
I
r
t
r
o
f
3
s
n
V
,
e
g
a
t
l
o
V
t
u
p
n
I
l
e
v
e
L
H
G
I
H
H
I
0
.
2
V
V
,
e
g
a
t
l
o
V
t
u
p
n
I
l
e
v
e
L
W
O
L
L
I
8
.
0
V
s
c
i
t
s
i
r
e
t
c
a
r
a
h
C
l
a
c
i
r
t
c
e
l
E
t
u
p
t
u
O
V
,
e
g
a
t
l
o
V
t
u
p
t
u
O
l
e
v
e
L
H
G
I
H
H
O
5
.
2
9
.
2
V
V
N
I
V
=
H
I
V
r
o
L
I
I
,
T
U
O
A
m
0
2
-
=
V
,
e
g
a
t
l
o
V
t
u
p
t
u
O
l
e
v
e
L
W
O
L
L
O
2
.
0
5
.
0
V
V
N
I
V
=
H
I
V
r
o
L
I
I
,
T
U
O
A
m
0
2
=
V
,
e
g
a
t
l
o
V
t
u
p
t
u
O
l
a
i
t
n
e
r
e
f
f
i
D
T
0
.
2
7
.
2
V
R
L
0
0
1
=
1
e
t
o
N
,
V
|
,
t
u
p
t
u
O
l
a
i
t
n
e
r
e
f
f
i
D
n
i
e
c
n
e
r
e
f
f
i
D
T
V
|
-
|
T
|
4
.
0
V
R
L
0
0
1
=
1
e
t
o
N
,
V
,
e
g
a
t
l
o
V
t
u
p
t
u
O
e
d
o
M
n
o
m
m
o
C
S
O
0
.
3
V
R
L
0
0
1
=
1
e
t
o
N
,
V
|
,
t
u
p
t
u
O
e
d
o
M
n
o
m
m
o
C
n
i
e
c
n
e
r
e
f
f
i
D
S
O
V
-
S
O
|
4
.
0
V
R
L
0
0
1
=
1
e
t
o
N
,
t
n
e
r
r
u
C
y
l
p
p
u
S
t
n
e
c
s
e
i
u
Q
I
C
C
0
0
1
A
V
N
I
V
=
C
C
2
e
t
o
N
,
D
N
G
r
o
,
t
n
e
r
r
u
C
e
g
a
k
a
e
L
t
u
p
t
u
O
e
t
a
t
s
-
i
r
T
I
Z
O
0
.
2
A
V
T
U
O
V
=
C
C
,
D
N
G
r
o
V
=
E
L
B
A
N
E
L
I
,
V
=
E
L
B
A
N
E
H
I
I
,
t
n
e
r
r
u
C
t
i
u
c
r
i
C
t
r
o
h
S
t
u
p
t
u
O
C
S
0
3
-
0
5
1
-
A
m
V
N
I
V
=
C
C
3
d
n
a
1
s
e
t
o
N
,
D
N
G
r
o
f
f
O
r
e
w
o
P
t
n
e
r
r
u
C
e
g
a
k
a
e
L
t
u
p
t
u
O
I
F
F
O
0
0
1
A
V
C
C
V
,
V
0
=
T
U
O
1
e
t
o
N
,
V
6
=
I
F
F
O
0
0
1
-
A
V
C
C
V
,
V
0
=
T
U
O
1
e
t
o
N
,
V
5
2
.
0
-
=
SPECIFICATIONS
NOTE 1: Refer to EIA specifications for RS-422 serial protocol for exact test conditions.
NOTE 2: Measured per input. All other inputs at V
CC
or GND.
NOTE 3: This is the current sourced when a high output is shorted to GND. Only one output at a time should be shorted.
Unless otherwise noted, the following specifications apply for V
CC
= +3.0V to +3.6V with T
amb
= 25
C and all MIN
and MAX limits apply across the recommended operating temperature range.
4
SP431DS/08 SP431 High Speed, +3.3V Quad RS-422 Differential Line Driver Copyright 1997 Sipex Corporation
SPECIFICATIONS (continued)
NOTE 4: Skew is defined as the difference in propagation delays between complementary outputs at the 50% input.
NOTE 5: Output disable time is the delay from ENABLE or ENABLE being switched to the output transistors turning off.
The actual disable times are less than indicated due to the delay added by the RC time constant of the load.
NOTE 6: C
PD
determines the no load dynamic power consumption, P
D
= (C
PD
V
CC
2
f) + (I
CC
V
CC
), and the no load dynamic
current consumption, I
S
= (C
PD
V
CC
f) + I
CC
.
Unless otherwise noted, the following specifications apply for V
CC
= +3.0V to +3.6V, T
amb
= 25
C, t
r
< 6ns, t
f
< 6ns,
and all MIN and MAX limits apply across the recommended operating temperature range.
S
R
E
T
E
M
A
R
A
P
.
N
I
M
.
P
Y
T
.
X
A
M
S
T
I
N
U
S
N
O
I
T
I
D
N
O
C
S
C
I
T
S
I
R
E
T
C
A
R
A
H
C
G
N
I
H
C
T
I
W
S
t
,
s
y
a
l
e
D
n
o
i
t
a
g
a
p
o
r
P
D
H
L
P
t
,
D
L
H
P
5
s
n
3
e
r
u
g
i
F
w
e
k
S
5
.
0
s
n
4
e
t
o
N
,
3
e
r
u
g
i
F
t
,
s
e
m
i
T
ll
a
F
d
n
a
e
s
i
R
t
u
p
u
O
l
a
i
t
n
e
r
e
f
f
i
D
H
L
T
t
,
L
H
P
3
s
n
3
e
r
u
g
i
F
t
,
e
m
i
T
e
l
b
a
n
E
t
u
p
t
u
O
H
Z
P
3
1
s
n
5
e
r
u
g
i
F
t
,
e
m
i
T
e
l
b
a
n
E
t
u
p
t
u
O
L
Z
P
8
s
n
5
e
r
u
g
i
F
t
,
e
m
i
T
e
l
b
a
s
i
D
t
u
p
t
u
O
Z
H
P
8
s
n
5
e
t
o
N
,
5
e
r
u
g
i
F
t
,
e
m
i
T
e
l
b
a
s
i
D
t
u
p
t
u
O
Z
L
P
6
s
n
5
e
t
o
N
,
5
e
r
u
g
i
F
C
,
e
c
n
a
t
i
c
a
p
a
C
n
o
i
t
a
p
i
s
s
i
d
r
e
w
o
P
D
P
0
5
F
p
6
e
t
o
N
C
,
e
c
n
a
t
i
c
a
p
a
C
t
u
p
n
I
N
I
6
F
p
5
SP431DS/08 SP431 High Speed, +3.3V Quad RS-422 Differential Line Driver Copyright 1997 Sipex Corporation
Figure 4. Driver Single-Ended TRI-STATE Test Circuit
Figure 5. Driver Single-Ended TRI-STATE Waveforms
Figure 2. AC Test Circuit
Figure 3. Propagation Delays
AC TEST CIRCUITS AND SWITCHING TIME WAVEFORMS
D
Generator
Driver
Enabled
DI
X
50
CL
CL
CL
RL
D0
X
A
D0
X
B
Figure 6. Differential Rise and Fall Times
t
TLH
t
THL
3.0V
0.0V
INPUT
OUTPUT
(DIFFERENTIAL)
10%
90%
90%
10%
Input pulse: f = 1MHz, 50%
t
r
< 6ns
t
f
< 6ns
f=1 MHz t
R
< 10ns, t
F
< 10ns
1.5V
1.5V
t
PLHD
t
PHLD
DRIVER
INPUT DIX
DIFFERENTIAL
OUTPUT
20%
20%
0V
0V
t
TLH
t
THL
80%
80%
V
DIFF
= V
A
- V
B
0V (Differential)
0V
3V
GND
V
OH
V
OL
DRIVER D0
X
B
DRIVER D0
X
A
V
CC
S1
ENABLE
D0
X
A
S2
D0
X
B
CL
110
Test
Point
S3
V
CC
If ENABLE is the input, then ENABLE = HIGH
If ENABLE is the input, then ENABLE = LOW
ENABLE
ENABLE
1.5V
3V
1.5V
0V
t
PHZ
t
PLZ
V
OL
+ 0.3V
t
PZH
1.3V
V
OH
GND
t
PZL
V
CC
V
OL
1.3V
Input = ENABLE or ENABLE
S1= V
CC
S2 = D0
X
B
S3 = GND
and/or
S1 = GND
S2 = D0
X
A
S3 = GND
Input = ENABLE or ENABLE
S1= GND
S2 = D0
X
B
S3 = V
CC
and/or
S1 = V
CC
S2 = D0
X
A
S3 = V
CC
V
OH
= 0.3V
ENABLE