HT9020 datasheet(6/12 Pages) HOLTEK

6 / 12 page

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

VDD

Conditions

ZREF

Output Impedance

—

Ω

VIH

Logic Input High Voltage

—

3.5

—

VIL

Logic Input Low Voltage

—

1.5

IIH

Logic Input High Current

VIH=5.0V

—

0.1

µA

IIL

Logic Input Low Current

VIL=0V

–0.1

—

IOH

Output High Current

VOH=4.5V

—

–0.5

IOL

Output Low Current

VOL=0.5V

2.0

—

ILKH

Output Disable

Leakage Current

VLKH=5.0V

—

0.1

µA

ILKL

VLKL=0V

–0.1

—

µA

ISO

Pull Down Current

—

µA

IDR

Pull Up Current

—

µA

GDL

Detection Level

2.5V

fIN=305~640Hz

–42

—

–8

dBm

5.0V

–36

—

dBm

GRL

Rejection Level

All frequency

—

–50

dBm

fROL

Rejection Out-band

Low Frequency

V<0 dBm, ENV=0

—

200

fROH

Rejection Out-band

High Frequency

V<0 dBm, ENV=0

800

—

tDD1

Detection Time

In-band dial tone

2.1

3.32

3.0

sec

tDD2

Detection Time

In-band dial tone

6.5

7.0

8.0

sec

tDB

Detection Busy Time

In-band busy tone

6.8

7.5

8.2

sec

tDR

Detection Ringer Time

30 Times ringback tone

(2 sec On/4 sec Off)

150

180

210

sec

tDN

Detection Time

No signal

30.2

sec

tDE

Detection Enable Time

—

0.2

30.2

sec

tTO

RELI, O Turn on Time

—

100

120

ABREND Output Time

—

100

120

tB1

Break Time

(tB1+2.3sec)

After a busy tone is detected 60.0

62.8

65.0

sec

tB2

After no signal is detected

62.0

65.1

68.0

sec

RON

Transition on Resistor

VRDLI=5.0V, VRDLO=0V

—

500

100

Ω

ROFF

Gate Output off Resistor

VRDLI=0V, VRDLO=5.0V

—

Ω

HT9020

21st Aug ’98

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