TLC2942_06 Datasheet, PDF (10/29 Pages) Texas Instruments – HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK

TLC2942
HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK
SLAS146B – NOVEMBER 1996 – REVISED JUNE 1997
VCO1, VCO2 electrical characteristics, V_DD = 5 V, T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
VOH
VOL
VIT
High-level output voltage
Low-level output voltage
Input threshold voltage
SELECT1, SELECT2,
VCOINHIBIT1, VCOINHIBIT2
IOH = – 2 mA
IOL = 2 mA
4
V
0.5 V
1.5 2.5 3.5 V
II
Input current
SELECT1, SELECT2,
VI = VDD or GND
VCOINHIBIT1, VCOINHIBIT2
± 1 µA
Zi(VCOIN) Input impedance
VCOIN1, VCOIN2
VCOIN = 1/2 VDD
10
MΩ
IDD(INH) VCO supply current (inhibit) (each chip)
See Note 4
0.01
1 µA
IDD(VCO) VCO supply current (each chip)
See Note 10
15
35 mA
NOTES: 4. The current into VCO VDD and LOGIC VDD when VCOINHIBIT = VDD, and the PFD is inhibited.
10. The current into VCO VDD and LOGIC VDD when VCOIN = 1/2 VDD, RBIAS = 2.2 kΩ, VCOINHIBIT = GND, and the PFD is inhibited.
PFD1, PFD2 electrical characteristics, V_DD = 5 V, T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
VOH
VOL
IOZ
VIH
High-level output voltage
IOH = 2 mA
4.5
Low-level output voltage
IOL = 2 mA
High-impedance output current
PFD INHIBIT1, PFD INHIBIT2 = high,
VO = VDD or GND
High-level input voltage
FIN–A1, FIN–B1,
FIN–A2, FIN–B2
4.5
V
0.2 V
± 1 µA
V
VIL
Low-level input voltage
FIN–A1, FIN–B1,
FIN–A2, FIN–B2
VIT
Input threshold voltage
PFD INHIBIT2,
PFD INHIBIT1
1V
1.5 2.5 3.5 V
Ci
Input capacitance
FIN–A1, FIN–B1,
FIN–A2, FIN–B2
5
pF
Zi
Input impedance
FIN–A1, FIN–B1,
FIN–A2, FIN–B2
10
MΩ
IDD(Z)
High-impedance state PFD supply current
See Note 6
0.1
1 µA
IDD(PFD) PFD supply current (each chip)
See Note 11
0.15
3 mA
NOTES: 6. The current into LOGIC VDD, when FIN–A and FIN–B = GND, PFD INHIBIT= VDD, no load, and VCO OUT is inhibited.
11. The current into LOGIC VDD when FIN–A and FIN–B = 1 MHz with VI(PP) = 5-V rectangular wave, PFD INHIBIT = GND, no load,
and
VCO OUT is inhibited.
10
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