MC74HC4046A_14 datasheet(4/15 Pages) ONSEMI

Part #	MC74HC4046A

Description	Phase-Locked Loop

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MC74HC4046A

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4

[VCO Section]

DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)

Symbol

Parameter

Test Conditions

VCC

V

Guaranteed Limit

Unit

–55 to 25

_C

≤ 85°C

≤ 125°C

VIH

Minimum High−Level

Input Voltage

INH

Vout = 0.1 V or VCC − 0.1 V

|Iout| ≤ 20 mA

3.0

4.5

6.0

2.1

3.15

4.2

2.1

3.15

4.2

2.1

3.15

4.2

V

VIL

Maximum Low−Level

Input Voltage

INH

Vout = 0.1 V or VCC − 0.1 V

|Iout| ≤ 20 mA

3.0

4.5

6.0

0.90

1.35

1.8

0.9

1.35

1.8

0.9

1.35

1.8

V

VOH

Minimum High−Level

Output Voltage

VCOOUT

Vin =VIH or VIL

|Iout| ≤ 20 mA

3.0

4.5

6.0

1.9

4.4

5.9

1.9

4.4

5.9

1.9

4.4

5.9

V

Vin =VIH or VIL

|Iout| ≤ 4.0 mA

|Iout| ≤ 5.2 mA

4.5

6.0

3.98

5.48

3.84

5.34

3.7

5.2

VOL

Maximum Low−Level

Output Voltage

VCOOUT

Vout = 0.1 V or VCC − 0.1 V

|Iout| ≤ 20 mA

3.0

4.5

6.0

0.1

V

Vin =VIH or VIL

|Iout| ≤ 4.0 mA

|Iout| ≤ 5.2 mA

4.5

6.0

0.26

0.33

0.4

Iin

Maximum Input Leakage

Current INH, VCOIN

Vin =VCC or GND

6.0

0.1

1.0

mA

Min

Max

Min

Max

Min

Max

VVCO IN

Operating Voltage Range at

VCOIN over the range

specified for R1; For linearity

see Fig. 15A, Parallel value of

R1 and R2 should be > 2.7 k

W

INH = VIL

3.0

4.5

6.0

0.1

1.0

2.5

4.0

0.1

1.0

2.5

4.0

0.1

1.0

2.5

4.0

V

R1

Resistor Range

3.0

4.5

6.0

3.0

300

3.0

300

3.0

300

k

W

R2

3.0

4.5

6.0

3.0

300

3.0

300

3.0

300

C1

Capacitor Range

3.0

4.5

6.0

40

No

Limit

pF

[VCO Section]

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6.0 ns)

Symbol

Parameter

VCC

V

Guaranteed Limit

Unit

–55 to 25

_C

≤ 85°C

≤ 125°C

Min

Max

Min

Max

Min

Max

Df/T

Frequency Stability with

Temperature Changes

(Figure 14A, B, C)

3.0

4.5

6.0

%/K

fo

VCO Center Frequency

(Duty Factor = 50%)

(Figure 15A, B, C, D)

3.0

4.5

6.0

3

11

13

MHz

DfVCO

VCO Frequency Linearity

3.0

4.5

6.0

See Figures 16A, B, C

%

∂ VCO

Duty Factor at VCOOUT

3.0

4.5

6.0

Typical 50%

%

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