PI6C9910AS Просмотр технического описания (PDF) - Pericom Semiconductor
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PI6C9910AS Datasheet PDF : 6 Pages
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PI6C9910
Zero-Delay Clock Buffer 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
Switching Characteristics Over Operating Range(1)
Symbol
Description
Min. Typ. Max.
fNOM
Operation Clock
Frequency in MHz
FS = LOW
15
35
FS = HIGH
25
80
tRPWH REF Pulsewidth HIGH
5.0
tRPWL REF Pulsewidth LOW
5.0
tSKEW Zero Output Skew (All Outputs)(2,3)
0.25
0.5
tDEV Device-to-Device Skew(4,5)
1.0
tPD Propagation Delay, REF Rise to FB Rise
-0.5
0.0
+0.5
tODCV Output Duty Cycle Variation(6)
-1.0
0.0
+1.0
tORISE Output Rise Time(7,8)
0.15
1.0
1.5
tOFALL Output Fall Time(7,8)
0.15
1.0
1.5
tLOCK PLL Lock Time(9)
0.5
tJR Output Jitter
Cycle-to-Cycle(5)
RMS(5)
250
60
Notes:
1. Test measurement levels for the PI6C9910-5 are TTL levels (1.5V to 1.5V).
Test conditions assume signal transition times of 2ns or less and output loading
as shown in the AC Test Loads and Waveforms unless otherwise specified.
2. Skew is defined as the time between the earliest and the latest output transition
among all outputs with AC Test Load.
3. tSKEW is defined as the skew between outputs.
4. tDEV is the output-to-output skew between any two outputs on separate devices
operating under the same conditions (VCC, ambient temperature, air flow, etc.).
5. Tested initially and after any design or process changes that may affect these
parameters.
6. tODCV is the deviation of the output from a 50% duty cycle.
7. Specified with outputs loaded with AC Test Load (30pF).
8. tORISE and tOFALL measured between 0.8V and 2.0V.
9. tLOCK is the time that is required before synchronization is achieved.
This specification is valid only after VCC is stable and within normal operating
limits. This parameter is measured from the application of a new signal or
frequency at REF or FB until tPD is within specified limits.
Units
MHz
ns
ms
ps
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
112
PS8341B 03/05/99
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