CDC921 Datasheet, PDF (7/17 Pages) Texas Instruments – 133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS WITH 3-STATE OUTPUTS

CDC921
133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS
WITH 3-STATE OUTPUTS
SCAS623 –MAY 27, 1999
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP† MAX UNIT
VIK Input clamp voltage
VDD = 3.135 V,
II = –18 mA
RI
Input resistance
XIN, XOUT
VDD = 3.465 V,
VI = VDD –0.5 V
XOUT
VDD = 3.135 V,
VI = VDD –0.5 V
IIH
High-level input current
SEL0, SEL1,
SPREAD
PWR_DWN
VDD = 3.465 V,
VDD = 3.465 V,
VI = VDD
VI = VDD
SEL133/100 VDD = 3.465 V,
VI = VDD
XOUT
VDD = 3.135 V,
VI = 0 V
IIL
Low-level input current
SEL0, SEL1,
SPREAD
PWR_DWN
VDD = 3.465 V,
VDD = 3.465 V,
VI = GND
VI = GND
SEL133/100 VDD = 3.465 V,
VI = GND
IOZ High-impedance-state output current
|VDD| = max,
VO = VDD or GND
VDD = 2.625 V,
PWR_DWN = low
All outputs = low,
–1.2 V
80
350 kΩ
20
50 mA
<10
10 µA
<10
10 µA
<10
10 µA
–2
–5 mA
<10 –10 µA
<10 –10 µA
<10 –10 µA
±10 µA
<20 100 µA
IDD Supply current
VDD = 2.625 V,
VDD = 3.465 V,
PWR_DWN = low
All outputs = high
All outputs = low,
<20 100 µA
<50 200 µA
IDD(Z)
High-impedance-state supply
current
Dynamic IDD
VDD = 3.465 V,
VDD = 2.625 V
VDD = 3.465 V
CL = 20 pF,
CPU = 133 MHz
CI
Input capacitance
VDD = 3.3 V,
Crystal terminal capacitance
VDD = 3.3 V,
† _{All typical values are measured at their respective nominal VDD values.}
All outputs = high
VDD = 3.465 V
VDD = 2.625 V
VI = VDD or GND
VI = 0.3 V
12
37 mA
1.4
mA
30
114 156
mA
44
60
3.3
5.8 pF
18 18.5 22.5 pF
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
7