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PDF NTE974 Data sheet ( Hoja de datos )
| Número de pieza | NTE974 | |
| Descripción | Integrated Circuit Phase-Frequency Detector | |
| Fabricantes | NTE Electronics | |
| Logotipo |  |
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NTE974
Integrated Circuit
Phase–Frequency Detector
Description:
The NTE974 consists of two digital phase detectors, a charge pump, and an amplifier. In combination
with a voltage controlled multivibrator, it is useful in a broad range of phase–locked loop applications.
The circuit accepts MTTL waveforms at the R and V inputs and generates an error voltage that is pro-
portional to the frequency and/or phase difference of the input signals. Phase detector #1 is intended
for use in systems requiring zero frequency and phase difference at lock. Phase detector #2 is used
if quadrature lock is desired. Phase detector #2 can also be used to indicate that the main loop, utiliz-
ing phase detector #1, is out of lock.
Absolute Maximum Ratings:
Supply Operating Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.75 to 5.25V
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7.0V
Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.5V
Output Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.5V
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Maximum Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.07°C/mW
Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15°C/mW
Electrical Characteristics: (TA = +25°C unless otherwise spcified)
Parameter
Symbol Pin
Test Conditions
Min Typ Max Unit
Input
Forward Current
IIL 1, 3 VIL = 0.4V, VCCH = 5.25V
11
– – –4.8 mA
– – –1.6 mA
Leakage Current
Clamp Voltage
IIH 1, 3 VIH = 5.5V, VCCH = 5.25V
4 VCCH = 5.25V
11 VIH = 5.5V, VCCH = 5.25V
IIHH 1, 3, 11 VIHH = 5.5V, VCCH = 5.25V
VIC 1, 3 IIC = –10 mA, VCCL = 4.75V
– – 120 µA
– – 5.0 µA
– – 40 µA
1.0 –
– mA
– – –1.5 V
Note 1. The outputs of the device must be tested by sequencing through the indicated input states
according to the truth table. All input, power supply, and ground voltages must be maintained
between tests unless otherwise noted.
Note 2. Input Loading Factor: R, V = 3
Output Loading Factor (Pin8) = 10
Total Power Dissipation = 85mW Typ/Pkg
Propagation Delay Time = 9ns Typ (thru phase detector)
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet NTE974.PDF ] | |
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