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CDCVF857 Scheda tecnica(PDF) 6 Page - Texas Instruments

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Il numero della parte CDCVF857
Spiegazioni elettronici  2.5-V PHASE-LOCK LOOP CLOCK DRIVER
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

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CDCVF857
2.5V PHASELOCK LOOP CLOCK DRIVER
SCAS047D − MARCH 2003 − REVISED JUNE 2005
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 5)
MIN
TYP
MAX
UNIT
Supply voltage
VDDQ
PC1600 − PC3200
2.3
2.7
V
Supply voltage
AVDD
VDDQ − 0.12
2.7
V
Low-level input voltage, VIL
CLK, CLK, FBIN, FBIN
VDDQ/2 – 0.18
V
Low-level input voltage, VIL
PWRDWN
−0.3
0.7
V
High-level input voltage, VIH
CLK, CLK, FBIN, FBIN
VDDQ/2 + 0.18
V
High-level input voltage, VIH
PWRDWN
1.7
VDDQ + 0.3
V
DC input signal voltage (see Note 5)
–0.3
VDDQ + 0.3
V
Differential input signal voltage, VID (see Note 6)
dc
CLK, FBIN
0.36
VDDQ + 0.6
V
Differential input signal voltage, VID (see Note 6)
ac
CLK, FBIN
0.7
VDDQ + 0.6
V
Input differential pair cross voltage, VIX (see Notes 7 and 8)
VDDQ/2 – 0.2
VDDQ/2 + 0.2
V
High-level output current, IOH
−12
mA
Low-level output current, IOL
12
mA
Input slew rate, SR
1
4
V/ns
Operating free-air temperature, TA
−40
85
°C
NOTES:
5. The unused inputs must be held high or low to prevent them from floating.
6. The dc input signal voltage specifies the allowable dc execution of the differential input.
7. The differential input signal voltage specifies the differential voltage |VTR − VCP| required for switching, where VTR is the true input
level and VCP is the complementary input level.
8. The differential cross-point voltage is expected to track variations of VCC and is the voltage at which the differential signals must
be crossing.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VIK
Input voltage
All inputs
VDDQ = 2.3 V, II = –18 mA
–1.2
V
VOH
High-level output voltage
VDDQ = min to max, IOH = –1 mA
VDDQ – 0.1
V
VOH
High-level output voltage
VDDQ = 2.3 V, IOH = –12 mA
1.7
V
VOL
Low-level output voltage
VDDQ = min to max, IOL = 1 mA
0.1
V
VOL
Low-level output voltage
VDDQ = 2.3 V, IOL = 12 mA
0.6
V
VOD
Output voltage swing}
Differential outputs are terminated with
1.1
VDDQ – 0.4
V
VOX
Output differential cross-voltagew
Differential outputs are terminated with
120
Ω /CL = 14 pF (See Figure 3)
VDDQ/2 – 0.1 VDDQ/2
VDDQ/2 + 0.1
V
II
Input current
VDDQ = 2.7 V, VI = 0 V to 2.7 V
±10
µA
IOZ
High-impedance state output current
VDDQ = 2.7 V, VO= VDDQ or GND
±10
µA
IDDPD
Power-down current on
VDDQ + AVDD
CLK and CLK = 0 MHz;
PWRDWN = Low;
Σ of IDD and AIDD
20
100
µA
AIDD
Supply current on AVDD
fO = 170 MHz
6
8
mA
AIDD
Supply current on AVDD
fO = 200 MHz
8
10
mA
CI
Input capacitance
VDDQ = 2.5 V, VI = VDDQ or GND
2
2.5
3.5
pF
† All typical values are at a respective nominal VDDQ.
‡ The differential output signal voltage specifies the differential voltage VTR − VCP, where VTR is the true output level and VCP is the
complementary output level.
§ The differential cross-point voltage is expected to track variations of VDDQ and is the voltage at which the differential signals must be crossing.


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