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參數(shù)資料
| 型號： | CDCVF857RTB |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 2.5-V PHASE-LOCK LOOP CLOCK DRIVER |
| 中文描述： | 2.5 V的鎖相環(huán)時鐘驅(qū)動器 |
| 文件頁數(shù)： | 6/19頁 |
| 文件大?。?/td> | 475K |
| 代理商： | CDCVF857RTB |
SCAS047D MARCH 2003 REVISED JUNE 2005
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 5)
MIN
2.3
TYP
MAX
2.7
UNIT
Supply voltage
VDDQ
AVDD
CLK, CLK, FBIN, FBIN
PC1600 PC3200
V
VDDQ 0.12
2.7
Low-level input voltage, VIL
VDDQ/2 – 0.18
V
PWRDWN
0.3
0.7
High-level input voltage, VIH
CLK, CLK, FBIN, FBIN
VDDQ/2 + 0.18
V
PWRDWN
1.7
VDDQ + 0.3
VDDQ + 0.3
VDDQ + 0.6
VDDQ + 0.6
VDDQ/2 + 0.2
DC input signal voltage (see Note 5)
–0.3
V
Differential input signal voltage, VID (see Note 6)
dc
ac
CLK, FBIN
0.36
V
CLK, FBIN
0.7
Input differential pair cross voltage, VIX (see Notes 7 and 8)
High-level output current, IOH
Low-level output current, IOL
Input slew rate, SR
VDDQ/2 – 0.2
V
12
mA
12
mA
1
4
V/ns
°
C
Operating free-air temperature, TA
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.
40
85
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
VDDQ = min to max, IOH = –1 mA
VDDQ = 2.3 V, IOH = –12 mA
VDDQ = min to max, IOL = 1 mA
VDDQ = 2.3 V, IOL = 12 mA
Differential outputs are terminated with
120
/CL = 14 pF (See Figure 3)
VDDQ = 2.7 V, VI = 0 V to 2.7 V
VDDQ = 2.7 V, VO= VDDQ or GND
CLK and CLK = 0 MHz;
PWRDWN = Low;
Σ
of IDD and AIDD
fO = 170 MHz
fO = 200 MHz
VDDQ = 2.5 V, VI = VDDQ or GND
–1.2
V
VOH
High-level output voltage
VDDQ – 0.1
V
1.7
VOL
Low-level output voltage
0.1
V
0.6
VOD
VOX
II
IOZ
Output voltage swing
1.1
VDDQ – 0.4
VDDQ/2 + 0.1
V
Output differential cross-voltage
VDDQ/2 – 0.1
VDDQ/2
Input current
±
10
±
10
μ
A
μ
A
High-impedance state output current
IDDPD
Power-down current on
VDDQ + AVDD
20
100
μ
A
AIDD
Supply current on AVDD
6
8
mA
8
10
CI
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.
Input capacitance
2
2.5
3.5
pF
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