PI6C182HEX Pericom Semiconductor, PI6C182HEX Datasheet - Page 5

• Manufacturer Part Number: PI6C182HEX
• Description: Clock Buffer Precision 1 12 Clock Buffer
• Manufacturer: Pericom Semiconductor

Specifications of PI6C182HEX

• Number Of Outputs: 10
• Max Input Freq: 110 MHz
• Propagation Delay (max): 5.5 ns
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Operating Supply Voltage (max): 3.465V
• Operating Temp Range: 0C to 70C
• Propagation Delay Time: 8ns
• Operating Supply Voltage (min): 3.135V
• Mounting: Surface Mount
• Pin Count: 28
• Operating Supply Voltage (typ): 3.3V
• Package Type: SSOP
• Input Frequency: 110MHz
• Duty Cycle: 55%
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Compliant

Minimum and Maximum Expected
Capacitive Loads
Notes:
1.
2.
3.
SDRAM
Clock
Maximum rise/fall times are guaranteed at maximum specifi ed
load.
Minimum rise/fall times are guaranteed at minimum specifi ed
load.
Rise/fall times are specifi ed with pure capacitive load as shown.
Testing is done with an additional 500Ω resistor in parallel.
08-0298
Min.
20
Max.
30
Waveform
Interface
Clocking
Input
Waveform
(TTL)
3.3V
Units
Output
pF
2.4
1.5
0.4
SDRAM DIMM
Specifi caion
t plh
(1,2,3)
t SDRISE
Notes
Figure 1. Clock Waveforms
1.5V
tSDKH
Output
Buffer
1.5V
5
Design Guidelines to Reduce EMI
1. Place series resistors and CI capacitors as close as possible to
2. Minimize the number of “vias” of the clock traces.
3. Route clock traces over a continuous ground plane or over
4. Position clock signals away from signals that go to any cables
t SDFALL
tSDKP
the respective clock pins. Typical value for CI is 10pF. Series
resistor value can be increased to reduce EMI provided that
the rise and fall time are still within the specifi ed values.
a continuous power plane. Avoid routing clock traces from
plane to plane (refer to rule #2).
or any external connectors.
Test Load
tSDKL
Test
Point
1.5V
1.5V
Precision 1-to-10 Clock Buffer
t phl
PI6C182, PI6C182A
PS8165G
11/13/08