STLVDS31
HIGH SPEED
DIFFERENTIAL LINE DRIVERS
s
s
s
s
s
s
s
s
s
MEETS OR EXCEEDS THE
REQUIREMENTS OF ANSI TIA/EIA-644
STANDARD
LOW VOLTAGE DIFFERENTIAL SIGNALING
WITH TYPICAL OUTPUT VOLTAGE OF
350mV AND A 100Ω LOAD
TYPICAL OUTPUT VOLTAGE RISE AND
FALL TIMES OF 750ps (400Mbps)
TYPICAL PROPAGATION DELAY TIMES OF
1.7ns
OPERATES FROM A SINGLE 3.3V SUPPLY
POWER DISSIPATION 25mW TYPICAL PER
DRIVER AT 200MHz
DRIVER AT HIGH IMPEDANCE WHEN
DISABLED OR WITH V
CC
=0V
PIN COMPATIBLE WITH THE AM26LS31,
SN65LVD31
LOW VOLTAGE TTL (LVTTL) LOGIC INPUT
LEVELS
SOP
TSSOP
DESCRIPTION
The STLVDS31 is a quad differential line drivers
that implements the electrical characteristics of
low voltage differential signaling (LVDS). This
signaling technique lowers the output voltage
levels of 5V differential standard levels (such as
TIA/EIA-422B) to reduce the power, increase the
switching speeds and allows operations with a
ORDERING CODES
Type
STLVDS31BD
STLVDS31BDR
STLVDS31BTR
Temperature
Range
-40 to 85 °C
-40 to 85 °C
-40 to 85 °C
3.3V supply rail. Any of the four current mode
drivers will deliver a minimum differential output
voltage magnitude of 247mV into a 100Ω load
when enabled.
The intended application of this device and
signalling technique is for point-to-point baseband
data transmission over controlled impedance
media approximately 100Ω. The transmission
media may be printed circuit board traces,
backplanes or cables. The ultimate rate and
distance of data transfer is dependent upon the
attenuation characteristics of the media and noise
coupling to the environment.
The STLVDS31 is characterized for operation
from -40°C to 85°C.
Package
SO-16 (Tube)
SO-16 (Tape & Reel)
TSSOP16 (Tape & Reel)
Comments
50parts per tube / 20tube per box
2500 parts per reel
2500 parts per reel
May 2003
1/13
STLVDS31
TRUTH TABLE
INPUT
A
H
L
H
L
X
OPEN
OPEN
G
H
H
X
X
L
H
X
ENABLES
G
X
X
L
L
H
X
L
Y
H
L
H
L
Z
L
L
OUTPUTS
Z
L
H
L
H
Z
H
H
L=Low level, H=High Level, X=Don’t care, Z= High Impedance
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
I
T
stg
Supply Voltage (Note 1)
DC Input Voltage
Storage Temperature Range
Parameter
Value
-0.5 to 4.6
-0.5 to (V
CC
+ 0.5)
-65 to +150
Unit
V
V
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
Note 1: All voltages except differential I/O bus voltage, are with respect to the network ground terminal.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
IH
V
ILI
T
A
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
Operating Temperature Range
-40
Parameter
Min.
3.0
2.0
0.8
85
Typ.
3.3
Max.
3.6
Unit
V
V
V
°C
3/13
STLVDS31
ELECTRICAL CHARACTERISTICS
(Over recommended operating conditions unless otherwise noted.
All typical values are at T
A
= 25°C, and V
CC
= 3.3V)
Symbol
V
OD
∆V
OD
∆V
OC(SS)
Parameter
Differential Output Voltage
Change in Differential
Output Voltage Between
Logic State
Change in Steady-state
Common Mode Output
Voltage Between Logic
State
Steady-state Common
Mode Output Voltage
Peak to Peak Common
mode Output Voltage
Supply Current
R
L
= 100Ω
Test Conditions
Fig. 2
Min.
247
-50
Typ.
350
Max.
454
50
Unit
mV
mV
Fig. 3
1.125
1.2
1.375
V
V
OC(SS)
V
OC(PP)
I
CC
Fig. 3
-50
80
50
150
20
35
1
20
10
-24
±
12
±
1
±
1
3
mV
mV
mA
mA
mA
µA
µA
mA
mA
µA
µA
pF
V
IN
= 0.8V or 2V, Enabled, No Load
V
IN
= 0.8V or 2V, Enabled, R
L
= 100Ω
V
IN
= 0 or V
CC
, Disabled
11.5
25
0.3
4
0.6
6.1
I
IH
I
IL
I
SC
I
OZ
I
OFF
C
IN
High Level Input Current
Low Level Input Current
V
IH
= 2V
V
IL
= 0.8V
Short Circuit Output Current V
O(Y)
or V
O(Z)
= 0V
V
OD
= 0
High Impedance Output
Current
Power OFF Output Current
Input Capacitance
V
O
= 0 or 2.4V
V
CC
= 0
V
O
= 2.4V
4/13
STLVDS31
SWITCHING CHARACTERISTICS
(Unless otherwise noted. Typical values are referred to T
A
= 25°C
and V
CC
= 3.3V)
Symbol
t
PLH
t
PHL
t
r
t
f
t
sk(P)
t
sk(O)
t
PZH
Parameter
Propagation Delay Time,
Low to High Output
Propagation Delay Time,
High to Low Output
Differential Output Signal
Rise Time
Differential Output Signal
Fall Time
Pulse Skew (|t
THL
= t
TLH
|)
R
L
= 100Ω
Fig. 2
Test Conditions
C
L
= 10pF
Min.
0.5
1
0.4
0.4
Typ.
1.4
1.7
0.5
0.5
0.3
0
5.4
Max.
2
2.5
0.6
0.6
0.6
0.3
15
Unit
ns
ns
ns
ns
ns
ns
ns
t
PZL
t
PHZ
t
PLZ
Channel to Channel Output
Skew (note1)
Propagation Delay Time,
Fig. 4
High Impedance to High
Level Output
Propagation Delay Time,
High Impedance to Low
Level Output
Propagation Delay Time,
High Level to High
Impedance Output
Propagation Delay Time,
Low Level to High
Impedance Output
2.5
15
ns
8.1
15
ns
7.3
15
ns
Note 1: t
sk(O)
is the maximum delay time difference between drivers on the same device.
Note 2: RS-232 IN to TTL-CMOS OUT (from 50% to 50%)
Figure 1 :
Voltage and Current Definitions
5/13
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