CLARE M-991-02SMTR, M-991-02SM, M-991-01SMTR, M-991-01SM, M-991 Datasheet

Part # Description

M-991 14-pin plastic DIP
M-991-01SM 16-pin SOIC
M-991-01SMTR 16-pin SOIC Tape and Reel
M-991-02SM 16-pin SOIC, Extended

Temperature Range

M-991-02SMTR 16-pin SOIC, Extended

Temperature Range, Tape and
Reel

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DS-M991-R1

M-991

Call Progress Tone Generator

1

Block Diagram

Pin Assignments

Ordering Information

Features

• Generates standard call progress tones

• Digital input control

• Linear (analog) output

• Power output capable of driving standard line

• 14-pin DIP and 16-pin SOIC package types

• Single supply 5V CMOS (low power)

• Inexpensive 3.58 MHz time base

• Temperature range from -25ºC to 70ºC (-01 ver-

sion)

• Temperature range from -40ºC to 85ºC (-02 ver-

sion)

Applications

• Telephone systems

• Test equipment

• Callback

• Security systems

• Billing systems

Description

The M-991 is a call progress tone generator integrated
circuit for use in telephone systems. The circuit uses
low-power CMOS techniques to generate tones which
are digitally controlled and highly linear. The M-991 is
designed to permit operation with almost any system.
The use of integrated circuit techniques allows the M­991 to incorporate the control, tone generating, and
power output buffer into a single 14-pin DIP or a 16-pin
SOIC. A 3.58-MHz (color burst) crystal-controlled time
base guarantees accuracy and repeatability.

Absolute Maximum Ratings

Storage Temperature -55° to 125° C
Operating Ambient Temperature -25° to 70° C
Operating Ambient Temperature -40° to 85° C

for the M-991-02SM
V

DD

7.0V

Any Input Voltage VSS-0.6 to VDD+0.6V

Note:

1. Exceeding these ratings may permanently damage the M-991.

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2

M-991

Rev. 1

7. At XOUT pin as compared to 3.579545 MHz.

8. OUTDRIVE with load >5 KW/OUTDRIVE with
540 W load.

9. Resistance at V

REF

to VDDor VSS> 1 MW.

10. Crystal oscillator active.

11. Measured 90% to 10%.

Absolute Maximum Ratings are stress ratings. Stresses in
excess of these ratings can cause permanent damage to
the device. Functional operation of the device at these or
any other conditions beyond those indicated in the opera­tional sections of this data sheet is not implied. Exposure of
the device to the absolute maximum ratings for an extend­ed period may degrade the device and effect its reliability.

Specifications

Parameter Min Typ Max Units Notes

Power Supply V

DD

4.75 - 5.25 V 1

and Reference Current Drain, IDD - 2.0/4.0 - mA 8

V

REF

Pin:

Deviation from (V

DD

+ VSS)/2 -2 - +2 %

Internal Resistance from V

REF

3.25 - 6.75 kΩ

to VDD, V

SS

Oscillator Frequency Deviation -0.01 - +0.01 % 7

External Clock: (XOUT open)

V

IL

0 - 0.2 V

V

IH

VDD- 0.2 - V

DD

V

Duty Cycle 40 - 60 %

XIN, XOUT Loading:

Capacitance - - 10 pF 10
Resistance 20 - - MΩ -

Tone Output Frequency Deviation -0.5 - +0.5 % -

Level 100 - 180 mV 2
Distorting Components -35 - - dB 3
Idle - - -60 dBm 4
OUTDRIVE Envelope Rise Time - - 4 ms 5

Control DX, CE Pns:

V

IL

- - 0.5 V 6

V

IH

2.5 - - V

Mute Pins:

VOL (I

SINK

= -100 µA) - - 1.5 V

V

OH (ISOURCE

= 100 µA) VDD- 1.5 - - V

Timing Data Setup (t

DS

) 200 - - ns 11

Data Hold (t

DH

)10--ns

Chip Enable Fall (t

PL

)--90ns
Tone On Delay (tTO)--5ms
Tone Off Delay (tTD)--5ms
Mute DelayfromOutdrive (t

MO

) - - 200 ns

Notes: (unless otherwise specified)

1. All DC voltages are referenced to VSS.

2. Vrms per tone, 540 W load.

3. Any one frequency relative to the lowest level output tone (f<4000 Hz).

4. 0 dBm = 0.775 Vrms.

5. To 90% maximum amplitude.

6. For all supply voltages in the operating range.