TLC2942 Datasheet, PDF (8/28 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 = 3 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,
VCOINHIBIT2, VCOINHIBIT1
IOH = – 2 mA
IOL = 2 mA
2.4
V
0.3 V
0.9 1.5 2.1 V
II
Input current
SELECT1, SELECT2,
VCOINHIBIT2, VCOINHIBIT1
VI = VDD or GND
± 1 µA
Zi(VCOIN) Input impedance
VCOIN2, VCOIN1
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 5
5
15 mA
NOTES: 4. The current into VCO VDD and LOGIC VDD when VCOINHIBIT = VDD, and the PFD is inhibited.
5. The current into VCO VDD and LOGIC VDD when VCOIN = 1/2 VDD, RBIAS = 3.3 kΩ, VCOINHIBIT = GND, and the PFD is inhibited.
PFD1, PFD2 electrical characteristic, V_DD = 3 V, T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
VOH
VOL
IOZ
VIH
High-level output voltage
Low-level output voltage
High-impedance output current
High-level input voltage
FIN–A1, FIN–B1,
FIN–A2, FIN–B2
IOH = – 2 mA
2.7
IOL = 2 mA
PFD INHIBIT = high,
VO = VDD or GND
2.7
V
0.2 V
± 1 µA
V
VIL
VIT
Ci
Zi
IDD(Z)
Low-level input voltage
Input threshold voltage
FIN–A1, FIN–B1,
FIN–A2, FIN–B2
PFD INHIBIT2, PFD INHIBIT1
Input capacitance
FIN–A1, FIN–B1,
FIN–A2, FIN–B2
Input impedance
FIN–A1, FIN–B1,
FIN–A2, FIN–B2
High-impedance state PFD supply current
See Note 6
0.5 V
0.9 1.5 2.1 V
5
pF
10
MΩ
0.1
1 µA
IDD(PFD) PFD supply current
See Note 7
0.1 1.5 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.
7. The current into LOGIC VDD when FIN–A and FIN–B = 1 MHz with VI(PP) = 3 V rectangular wave, PFD INHIBIT = GND, no load,
and VCO OUT is inhibited.
8
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265