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| CDC421XXX Datasheet, PDF (3/18 Pages) Texas Instruments – FULLY INTEGRATED FIXED FREQUENCY LOW-JITTER, CRYSTAL-OSCILLATOR CLOCK GENERATOR | |||
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TERMINAL
NAME
NO.
TYPE
CE
1
I
OUTP
OUTN
NC
10
7
2â6, 11â15,
18â20, 23,
24
O
O
I or O
CDC421xxx
SLAS540 â APRIL 2007
Table 1. TERMINAL FUNCTIONS (continued)
ESD
PROTECTION
Y
Y
Y
DESCRIPTION
Chip enable (LVCMOS input)
CE = 1 enables the device and the outputs.
CE = 0 disables all current sources (LVPECLP = LVPECLN = Hi-Z).
High-speed positive differential LVPECL output. (Outputs are enabled by CE )
High-speed negative differential LVPECL output. (Outputs are enabled by CE )
Y
TI test pin. Do not connect; leave floating.
DEVICE SELECTION
The CDC421xxx device is an LVPECL low-phase-noise clock generator designed to work with a low-frequency
AT-crystal oscillator of a single-ended LVCMOS.
Table 2. Device Selection Table for CDC421xxx
CDC421xxx
DEVICE
MARKING
ORDERING
PART NUMBER
421100
CDC421100RGER
421100
CDC421100RGET
421106
CDC421106RGER
421106
CDC421106RGET
421125
CDC421125RGER
421125
CDC421125RGET
421156
CDC421156RGER
421156
CDC421156RGET
421212
CDC421212RGER
421212
CDC421212RGET
421250
CDC421250RGER
421250
CDC421250RGET
421312
CDC421312RGER
421312
CDC421312RGET
PACKAGE
QFN-24 tape and reel
QFN-24 small tape and reel
QFN-24 tape and reel
QFN-24 small tape and reel
QFN-24 tape and reel
QFN-24 small tape and reel
QFN-24 tape and reel
QFN-24 small tape and reel
QFN-24 tape and reel
QFN-24 small tape and reel
QFN-24 tape and reel
QFN-24 small tape and reel
QFN-24 tape and reel
QFN-24 small tape and reel
INPUT FREQUENCY OR
CRYSTAL VALUE (MHz)
33.3333
33.3333
35.4167
35.4167
31.2500
31.2500
31.2500
31.2500
35.4167
35.4167
31.2500
31.2500
31.2500
31.2500
OUTPUT FREQUENCY FOR
THE SPECIFIED INPUT
FREQUENCY (MHz)
100.00
100.00
106.25
106.25
125.00
125.00
156.25
156.25
212.50
212.50
250.00
250.00
312.50
312.50
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)(1)
VCC
Supply voltage(2)
VI
Voltage range for all other input pins(2)
IO
Output current for LVPECL
Electrostatic discharge (HBM)
TA
Characterized free-air temperature range (no airflow)
TJ
Maximum junction temperature
Tstg
Storage temperature range
VALUE
â0.5 to 4.6
â0.5 to VCC + 0.5
â50
2k
â40 to 85
125
â65 to 150
UNIT
V
V
mA
V
°C
°C
°C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.
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