CLC002
SMPTE 292M / 259M Serial Digital Cable Driver
General Description
The CLC002 SMPTE 292M / 259M serial digital cable driver
is a monolithic, high-speed cable driver designed for use in
SMPTE 292M / 259M serial digital video and ITU-T G.703
serial digital data transmission applications. The CLC002
drives 75
transmission lines (Belden 8281, Belden 1694A
or equivalent) at data rates up to 1.485 Gbps.
The CLC002 provides two selectable slew rates for SMPTE
259M and SMPTE 292M compliance. The output voltage
swing is adjustable from 800 mV
P-P
to 1.0 V
P-P
using an
external resistor.
Features
n
SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
n
Data rates to 1.485 Gbps
n
Differential input
n
75
differential output
n
Selectable slew rate
n
Adjustable output amplitude
n
Single 3.3V supply operation
n
Replaces the GS1528 and GS1528A
Applications
n
SMPTE 292M, SMPTE 344M, and SMPTE 259M serial
digital interfaces
n
Sonet/SDH and ATM interfaces
n
Digital routers and distribution amplifiers
n
Buffer applications
Typical Application
20087602
PRELIMINARY
April 2005
CLC002
SMPTE
292M
/
259M
Serial
Digital
Cable
Driver
2005 National Semiconductor Corporation
DS200876
www.national.com
Absolute Maximum Ratings
(Note 1)
Supply Voltage:
-0.5V to 3.6V
Input Voltage (all inputs)
-0.3V to V
CC
+0.3V
Output Current
28mA
ESD Rating (HBM)
2kV
Recommended Operating
Conditions
Supply Voltage (V
CC
V
EE
):
3.3V
5%
Operating Free Air Temperature (T
A
)
0C to +70C
DC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 2, 3).
Symbol Parameter
Conditions
Reference
Min
Typ
Max
Units
V
CMIN
Input Common Mode Voltage
SDI, SDI
1.6 +
V
SDI
/2
V
CC
V
SDI
/2
V
V
SDI
Input Voltage Swing
Differential
100
2000
mV
P-P
I
IN
Input Current
3.5
A
V
CMOUT
Output Common Mode Voltage
SDO, SDO
V
CC
V
SDO
V
V
SDO
Output Voltage Swing
Single-ended, 75
load,
R
REF
= 750
1%
720
800
880
mV
P-P
Single-ended, 75
load,
R
REF
= TBD
900
1000
1100
mV
P-P
SD/HD Input
Min for SD
SD/HD
2.4
V
Max for HD
0.8
V
I
CC
Supply Current
48
mA
AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3).
Symbol Parameter
Conditions
Reference
Min
Typ
Max
Units
DR
SDI
Input Data Rate
SDI, SDI
1485
Mbps
t
jit
Additive Jitter
1.485 Gbps
SDO, SDO
15
ps
P-P
270 Mbps
25
ps
P-P
t
r
,t
f
Output Rise Time, Fall Time
SD/HD = 0, 20% 80%
TBD
220
ps
SD/HD = 1, 20% 80%
400
TBD
800
ps
Mismatch in Rise/Fall Time
30
ps
t
OS
Output Overshoot
Note 4
8
%
RL
SDO
Output Return Loss
15
18-20
dB
Note 1: "Absolute Maximum Ratings" are those parameter values beyond which the life and operation of the device cannot be guaranteed. The stating herein of
these maximums shall not be construed to imply that the device can or should be operated at or beyond these values. The table of "Electrical Characteristics"
specifies acceptable device operating conditions.
Note 2: Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated referenced to V
EE
= 0 Volts.
Note 3: Typical values are stated for V
CC
= +3.3V and T
A
= +25C.
Note 4: Specification is guaranteed by design.
CLC002
www.national.com
2
Connection Diagram
20087601
8-Pin SOIC
Order Number CLC002MA
See NS Package Number M08A
Pin Descriptions
Pin #
Name
Description
1
SDI
Serial data true input.
2
SDI
Serial data complement input.
3
V
EE
Negative power supply (ground).
4
R
REF
Output driver level control. Connect a resistor to V
CC
to set output voltage swing.
5
V
CC
Positive power supply (+3.3V).
6
SD/HD
Output slew rate control. Output rise/fall time complies with SMPTE 292M when low and
SMPTE 259M when high.
7
SDO
Serial data complement output.
8
SDO
Serial data true output.
Device Operation
INPUT INTERFACING
The CLC002 accepts either differential or single-ended in-
put.
OUTPUT INTERFACING
The CLC002 uses current mode outputs. Single-ended out-
put levels range from 800 mV
P-P
to 1.0 V
P-P
10% into 75
AC-coupled coaxial cable. Output level is controlled by the
value of R
REF
connected between pin 4 and V
CC
.
OUTPUT SLEW RATE CONTROL
The CLC002 output rise and fall times are selectable for
either SMPTE 259M or SMPTE 292M compliance via pin 6,
SD/HD. For slower rise and fall times, or SMPTE 259M
compliance, SD/HD is set high. For faster rise and fall times,
or SMPTE 292M compliance, SD/HD is set low.
REPLACING THE GENNUM GS1528
The CLC002 is form-fit-function compatible with the Gennum
GS1528.
CLC002
www.national.com
3
Physical Dimensions
inches (millimeters)
unless otherwise noted
8-Pin SOIC
Order Number CLC002MA
NS Package Number M08A
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves
the right at any time without notice to change said circuitry and specifications.
For the most current product information visit us at www.national.com.
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WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR
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which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, and whose failure to perform when
properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to result
in a significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be reasonably
expected to cause the failure of the life support device or
system, or to affect its safety or effectiveness.
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www.national.com
CLC002
SMPTE
292M
/
259M
Serial
Digital
Cable
Driver
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