U74HCT7046

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

7 of 16

www.unisonic.com.tw

QW-R502-851.A

DC CHARACTERISTICS (Cont.)

VCO Section

(Voltages are Referenced to GND, Ground=0V)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

HIGH Level Input Voltage INH

2

1.6

V

LOW Level Input Voltage INH

1.2 0.8

V

4.4

4.5

V

3.9

4.3

V

0

0.1

V

0.1

5

0.26

V

0.4

V

±0.1

μA

Resistance Range

R1 / R2

3.0

300

kΩ

Capacitor Range

C1

40

pF

specified for R1; for linearity

(Fig10)

1.1

3.4

V

Note: 1. The parallel value of R1 and R2 should be more than 2.7 kΩ. Optimum performance is achieved when

R1 and/ or R2 are/is>10 kΩ.

Demodulator Section

(Voltages are Referenced to GND (Ground=0V))

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Resistor Range

the leakage current can influence

50

300 kΩ

±20

mV

25

Ω

Phase Comparator Section

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

21

40

ns

Output Transition time

7

15

ns

3-State Output Enable Time

27

56

ns

3-State Output Disable Time

35

65

ns

AC Coupled Input Sensitivity

15

mV

VCO Section

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Frequency Stability with

Temperature Change

Δf/T

R1=100 KΩ; R2=∞; C1=100pF

0.15

%/K

VCO Centre Frequency

(duty Factor = 50%)

R1=3KΩ, R2 =∞, C1=40pF

11

17

MHz

VCO Frequency Linearity

R2=∞,C1=100pF (Fig.10)

0.4

%

50

%