M-982-02

www.clare.com

3

Rev. 4

Call Progress Tones

Frequency (HZ)

Use

12

350

440

Dial Tone

400

Off

Special

440

Off

Alert Tone

440

480

Audible Ring

440

620

Pre-empt

480

Off

Bell High Tone

480

620

Reorder (Bell Low)

350

Off

Special

620

Off

Special

941

1209

425

Off

European

Specifications (continued)

Parameter

Conditions

Min

Max

Units

Notes

SIGIN pin

Voltage range

-

-6.5

VDD

V

Input impedance

f=500 Hz

80

-

k

Ω

Input spectrum

-

-

28

kHz

Clock

External clock

VIL

XOUT open

-

0.2

V

connected to XIN pin

VIH

XOUT open

VDD-0.2

-

V

Duty cycle

XOUT open

40

60

%

XIN, XOUT with crystal Capacitance

-

-

10

pF

osc. active

Internal resistance

-

20

-

MW

Power up (TPU)

PD hi to lo

-

30

ms

X358 pin

VOL

CL = 20 pF,

-

0.2

V

ISINK = -1mA

VOH

CL = 20 pF,

ISOURCE =1mA

VDD - 0.2

-

V

Duty cycle

CL = 20 pF

40

60

%

Tri-state

tEN,(High Z to Low Z)

CL = 50 pF,

-

250

ns

Operation

tDE,(Low Z to High )Z

RL = 100 kW

-

250

ns

Unless otherwise noted, V

Power levels are in dBm referenced to 600 ohm. DC voltages are referenced to V

Notes:

1. Per tone.

Pin Functions

Pin

Funtion

DET 1

Active high tri-state output, detect for 350 Hz.

DET 2

Active high tir-state ooutput, detect for 400/620 Hz.

(See Note.)

DET 3

Active high tri-state output, detect for 440 Hz.

DET 4

Active high tri-state output, detect for 480 Hz.

DET 5

Active high tri-state output, detect for 425 Hz.

EN

Active high enabled, when low drives STROBE low.

OE

Active high input. When low tri-state DET n pins.

SIGIN

Analog signal input (internally capacitive coupled).

STROBE

Active high output, indicates valid DET n.

V

DD

Most positive power supply input pin.

V

REF

Internally generated mid-power supply voltage

(output).

V

SS

Most negative power supply input pin.

X358

Buffered oscillator output (3.58 MHz).

XIN

Crystal oscillator or digital clock input.

XOUT

Crystal oscillator output. Used only with a crystal.

Use X358 when clock output signal is required.

XRANGE

Active low input. Adds 10 dB of gain to input stage.

MODE

Compatibility selection. Connection to VSS selects

400 Hz detection. (M-981-02 emulation.) Connection

to V

PD

Power-down operation, logic high inhibits internal

clock. Internal pulldown resistor.

Note: This output indicates 400 Hz detect when MODE is connected to V

Hz detect when open, or connected to V