LMH0346MH/NOPB National Semiconductor, LMH0346MH/NOPB Datasheet - Page 8

• Manufacturer Part Number: LMH0346MH/NOPB
• Description: IC RECLOCKER HD/SD SDI 20-TSSOP
• Manufacturer: National Semiconductor
• Type: Reclockerr

Specifications of LMH0346MH/NOPB

• Package / Case: 20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
• Mounting Type: Surface Mount
• Applications: SDTV/HDTV
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Package Type: TSSOP EP
• Rad Hardened: No
• Leaded Process Compatible: Yes
• Rohs Compliant: Yes
• Peak Reflow Compatible (260 C): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMH0346MH

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SCO_EN
Input SCO_EN enables the SCO/SDO2 differential output to
function either as a serial data-rate clock or second serial data
output. SCO/SDO2 functions as a serial data-rate clock when
SCO_EN is high. This pin has an internal pull-down device.
The default state (low) enables the SCO/SDO2 output as a
second serial data output.
CRYSTAL OR EXTERNAL CLOCK REFERENCE
The LMH0026 uses a 27 MHz crystal or external clock signal
as a timing reference input. A 27 MHz parallel resonant crystal
and load network may be connected to the XTAL IN/EXT CLK
and XTAL OUT pins. Alternatively, a 27 MHz LVCMOS com-
patible clock signal may be input to XTAL IN/EXT CLK. Pa-
rameters for a suitable crystal are given in
FIGURE 3. SDI, Lock Detect, and SD Timing
Table
2.
8
Frequency
Frequency Stability
Operating Mode
Load Capacitance
Shunt Capacitance
Series Resistance
Recommended Drive Level
Maximum Drive Level
Operating Temperature
Range
Parameter
TABLE 2. Crystal Parameters
27 MHz
±50 ppm @ recommended
drive level
Fundamental mode, Parallel
Resonant
20 pF
7 pF
40Ω max.
100 µW
500 µW
−10°C to +60°C
Value
30001805