LMH2190TM-38/NOPB National Semiconductor, LMH2190TM-38/NOPB Datasheet - Page 21

• Manufacturer Part Number: LMH2190TM-38/NOPB
• Description: IC CLOCK QUAD 26MHZ DVR 16-USMD
• Manufacturer: National Semiconductor
• Type: Fanout Buffer (Distribution)r

Specifications of LMH2190TM-38/NOPB

• Number Of Circuits: 1
• Ratio - Input:output: 1:4
• Differential - Input:output: No/No
• Input: Clock
• Output: Clock
• Frequency - Max: 27MHz
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-MicroSMD
• Frequency-max: 27MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMH2190TM-38TR

LAYOUT RECOMMENDATIONS
As with any other device, careful attention must be paid to the
board layout. If the board isn't properly designed, the perfor-
mance of the device can be less than might be expected.
Especially the input clock trace (SCLK_IN) and output traces
(CLK1/2/3/4) should be as short as possible to reduce the
capacitive load observed by the clock outputs. Also proper
decoupling close to the device is necessary. Beside a capac-
C
BAT
, C
OUT
: Low-ESR Surface-Mount Ceramic Capacitors (MLCC's) used in setting electrical characteristics.
Symbol
C
C
ESR
C
BAT
OUT
SCLK_IN
Parameter
Capacitor on V
Capacitor on V
Equivalent Series Resistance
Input AC Coupling Capacitor
TABLE 8. Recommended Component Values
BAT
OUT
21
itor in the µF range (See
V
alent series resistance (ESR) of the capacitors should be
sufficiently low. A standard capacitor is usually adequate. Ad-
vised values are given in
available to ease evaluation and demonstrate a proper board
layout.
0.47
Min
330
BAT
1
5
and V
OUT
Typ
470
2.2
1
is recommended close to device. The equiv-
10000
Max
500
Table
Table
8), a capacitor of 100 nF on
8. An evaluation board is
Units
mΩ
µF
pF
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