Driver. LMH0002 Datasheet
SMPTE 292M / 259M Serial Digital Cable Driver
The LMH0002 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
LMH0002 drives 75Ω transmission lines (Belden 8281,
Belden 1694A or equivalent) at data rates up to 1.485 Gbps.
The LMH0002 provides two selectable slew rates for
SMPTE 259M and SMPTE 292M compliance. The output
voltage swing is adjustable via a single external resistor.
The LMH0002 is powered from a single 3.3V supply. Power
consumption is typically 125mW in SD mode and 149mW in
n SMPTE 292M, SMPTE 344M and SMPTE 259M
n Data rates to 1.485 Gbps
n Differential input
n 75Ω differential output
n Selectable slew rate
n Adjustable output amplitude
n Single 3.3V supply operation
n Operating temperature range: Commercial 0˚C to +70˚C
(LMH0002MA) or Industrial −40˚C to +85˚C
n Typical power consumption: 125mW in SD mode and
149mW in HD mode
n Replaces the GS1528 and GS1528A
n SMPTE 292M, SMPTE 344M, and SMPTE 259M serial
n Sonet/SDH and ATM interfaces
n Digital routers and switches
n Distribution amplifiers
n Buffer applications
n Set top boxes
n Security cameras
© 2006 National Semiconductor Corporation DS201761
Absolute Maximum Ratings (Note 1)
Input Voltage (all inputs)
Storage Temperature Range
(Soldering 4 Sec)
Package Thermal Resistance
θJA 8-pin SOIC
θJC 8-pin SOIC
−0.5V to 3.6V
−0.3V to VCC+0.3V
−65˚C to +150˚C
ESD Rating (HBM)
ESD Rating (MM)
Supply Voltage (VCC – VEE):
Operating Free Air Temperature (TA)
0˚C to +70˚C
−40˚C to +85˚C
DC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 2, 3).
VCMIN Input Common Mode Voltage
Input Voltage Swing
VCMOUT Output Common Mode Voltage
VSDO Output Voltage Swing
SD/HD Input Voltage
SD/HD Input Current
ICC Supply Current
Single-ended, 75Ω load,
RREF = 750Ω 1%
Single-ended, 75Ω load,
RREF = 590Ω 1%
Min for SD
Max for HD
SD/HD = 0, (Note 5)
SD/HD = 1, (Note 5)
AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Note 3).
Input Data Rate
Output Rise Time, Fall Time
SD/HD = 0, 20% – 80%,
SD/HD = 1, 20% – 80%
Mismatch in Rise/Fall Time
tOS Output Overshoot
RLSDO Output Return Loss
Typ Max Units
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 VEE = 0 Volts.
Note 3: Typical values are stated for VCC = +3.3V and TA = +25˚C.
Note 4: Specification is guaranteed by characterization.
Note 5: Maximum ICC is measured at VCC = +3.465V and TA = +70˚C.
Note 6: Specification is guaranteed by characterization and verified by test.
Note 7: Output return loss is dependent on board design. The LMH0002 meets this specification on the SD002 evaluation board from 5MHz to 1.5GHz.
Order Number LMH0002MA or LMH0002TMA
See NS Package Number M08A
Serial data true input.
Serial data complement input.
Negative power supply (ground).
Output driver level control. Connect a resistor to VCC to set output voltage swing.
Positive power supply (+3.3V).
Output slew rate control. Output rise/fall time complies with SMPTE 292M when low and
SMPTE 259M when high.
Serial data complement output.
Serial data true output.
The LMH0002 accepts either differential or single-ended
input. The inputs are self-biased, allowing for simple AC or
DC coupling. DC-coupled inputs must be kept within the
specified common-mode range. SDI and SDI are self-biased
at approximately 2.1V with VCC = 3.3V. Figure 1 shows the
differential input stage for SDI and SDI.
FIGURE 1. Differential Input Stage for SDI and SDI.
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