Absolute Maximum Ratings

Supply Voltage ...........................................

-0.3V to 6V

Storage Temperature ...........................

-50°Cto125°C

Operating Temperature ..........................

-20°Cto75°C

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Ratings² 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

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

¾¾

2

¾

5.5

V

Operating Current

2.5V

Pulse

Off-hook

Keypad entry

No load

¾

0.2

1

mA

Tone

¾

0.6

2

mA

Standby Current

1V

On-hook, no load

No entry

¾¾

1

mA

Memory Retention Voltage

¾¾

1

¾

5.5

V

Memory Retention Current

1V

On-hook

¾

0.1

0.2

mA

Input Low Voltage

¾¾

¾

V

Input High Voltage

¾¾

¾

V

XMUTE Leakage Current

¾

No entry

¾¾

1

mA

XMUTE Sink Current

1

¾¾

mA

HKS Pin Input Current

¾¾

0.1

mA

HFI Pull-low Resistance

¾

200

¾

k

W

HDI Pull-high Resistance

¾

200

¾

k

W

Keypad Pin Source Current

-4

¾

–40

mA

Keypad Pin Sink Current

200

400

¾mA

HFO Pin Source Current

-1

¾¾

mA

HFO Pin Sink Current

1

¾¾

mA

HDO Pin Source Current

-1

¾¾

mA

HDO Pin Sink Current

1

¾¾

mA

Pause Time After Flash

¾

Control key

¾

0.2

¾

s

Digit key

¾

1

¾

One-key Redialing Pause Time

¾

One-key redialing

¾

1

¾

s

Key-in Debounce Time

¾¾

¾

20

¾

ms

Break Time for One-key Redialing

¾

One-key redialing

¾

1.2

¾

s

System Frequency

¾

Crystal=3.5795MHz

3.5759

3.5795

3.5831

MHz

HT9302 Series

Rev. 1.30

5

May 13, 2009