Pad No.

Pad Name

I/O

Internal

Connection

Description

8

FLAG1

O

NMOS

Open Drain

3HzB/6HzB flash output, busy output,

end-pulse or voice output indication (by mask

option). Open drain, active low output.

9

VSS

¾¾

Negative power supply, ground

10

FLAG2

O

NMOS

Open Drain

3Hz/6Hz flash output or busy output (by mask

option). Open drain, active low output.

11~19

KEY1~KEY9

I

Pull-high

Trigger key, low active. Key features such as

debounce time, pull-high resistance and repeat

are all by mask option.

Absolute Maximum Ratings

Supply Voltage ................................-0.3V to 6V

Storage Temperature ................-50°Cto125°C

Operating Temperature .............-20°Cto70°C

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-

mum Ratings² may cause substantial damage to the device. Functional operation of this de-

vice 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

Conditions

Operating Voltage

¾¾

3.6

¾

5.0

V

Operating Current

3V

No load

¾

200

400

mA

Standby Current

3V

¾¾

13

mA

Max. AUD Output Current

3V

-1.5

-2

¾

mA

FLAG Sink Current

3V

1.5

3.0

¾

mA

²H² Input Voltage

¾¾

¾

V

²L² Input Voltage

¾¾

0

¾

V

Oscillating Frequency

3V

76

96

116

kHz

HT818D0

4

March 15, 2000