Preliminary

AS2520/21/20B/21B

Rev. 5.1

Page 9

May 1999

Electrical Characteristics

Absolute Maximum Ratings*

Supply Voltage............................................................................................................................... -0.3

≤ V

DD

≤ 7V

Input Current..........................................................................................................................................+/- 25 mA

Input Voltage (LS) ....................................................................................................................... -0.3V

≤ V

IN

≤ 10V

Input Voltage (LI, CS, SS).............................................................................................................-0.3V

≤ V

IN

≤ 8V

Input Voltage (STB, RI) .........................................................................................................-2V

≤ V

IN

≤ V

Digital Input Voltage .......................................................................................................... -0.3V

≤ V

IN

≤ V

DD

+ 0.3V

Electrostatic Discharge ..........................................................................................................................+/- 1000V

Storage Temperature Range........................................................................................................... -65 to +125°C

Total Power Dissipation ............................................................................................................................ 500mW

*Exceeding these figures may cause permanent damage. Functional operation under these conditions is not permitted.

Recommended Operating Range

Symbol

Parameter

Conditions

Min.

Typ.*

Max.

Units

V

DD

Supply Voltage (internally generated)

Speech mode

3.0

4.1

5.5

V

V

PP

Supply Voltage (internally regulated)

Speech mode

3.0

4.1

5.5

V

T

AMB

Ambient Operating Temp. Range

-25

+70

°C

* Typical figures are at 25°C and are for design aid only; not guaranteed and not subject to production testing.

DC Characteristics (I

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Units

I

DD

Operating Supply Current

HS = high

LE = high

HS and LE = high

PD = high, CM running

5

5

5

300

7

7

7

mA

mA

µA

µA

I

DDPD

I

DD0

Power-Down Current

Standby Current

PD = high

All digital inputs = V

SS

200

1

µA

µA

V

LI

Line Voltage

13 mA< I

4.2

4.5

4.8

V

I

OL

Output Current, Sink

Pin CS, SS

V

1.5

mA

I

OL

Output Current, Sink

Pin CM

V

1.5

mA

V

IL

Input Low Voltage

T

V

SS

0.2 V

DD

V

V

IH

Input High Voltage

T

0.8 V

DD

V

DD

V