HT9200 datasheet(4/8 Pages) HOLTEK

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Absolute Maximum Ratings*

Supply Voltage ................................. –0.3V to 6V

Storage Temperature................. –50

°C to 125°C

Input Voltage.................... VSS–0.3 to VDD

+0.3V

Operating Temperature............... –20

°C to 75°C

*Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maxi-

mum Ratings” may cause substantial damage to the device. Functional operation of this

device at other conditions beyond those listed in the specification is not implied and prolonged

exposure to extreme conditions may affect device reliability.

Electrical Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

VDD

Operating Voltage

—

5.5

IDD

Operating Current

2.5V S/P=VDD,D0~D3=VSS,

CE=VSS, No load

—

240

2500

µA

5.0V

—

950

3000

VIL

“Low” Input Voltage

—

VSS

—

0.2VDD

VIH

“High” Input Voltage

—

0.8VDD

—VDD

ISTB

Standby Current

2.5V S/P=VDD,CE=VDD,

No load

——

µA

5.0V

—

Pull-high Resistance

2.5V

VOL=0V

120

180

270

Ω

5.0V

100

tDE

DTMF Output Delay

Time (Parallel Mode)

—

tUP+6

tUP+8

VTDC

DTMF Output DC

Level

2V~

5.5V

DTMF Output

0.45VDD

—

0.75VDD

ITOL

DTMF Sink Current

2.5V VDTMF=0.5V

–0.1

—

VTAC

DTMF Output AC

Level

2.5V Row group, RL=5k

Ω

0.12

0.15

0.18

Vrms

ACR

Column Pre-emphasis

2.5V Row group=0dB

DTMF Output Load

2.5V tHD

≤ –23dB

—

Ω

tHD

Tone Signal

Distortion

2.5V RL=5k

Ω

—–30

–23

fCLK

Clock Input Rate

(Serial Mode)

—

100

500

kHz

tUP

Oscillator Starting

Time (When CE is low)

5.0V

The time from CE

falling edge to normal

oscillator operation

——

fOSC

System Frequency

—

Crystal=3.5795MHz

3.5759

3.5795

3.5831

MHz

HT9200A/B

21st Aug ’98

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