M-993 datasheet, PDF - EEWORLD Datasheet

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M-993: DescriptionMF Signaling Circuit, CMOS, PDIP14, PLASTIC, DIP-14; CategoryWireless rf/communication Telecom circuit; File Size140KB，6 Pages; ManufacturerIXYS

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M-993 Overview

MF Signaling Circuit, CMOS, PDIP14, PLASTIC, DIP-14

M-993 Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	IXYS
Parts packaging code	DIP
package instruction	PLASTIC, DIP-14
Contacts	14
Reach Compliance Code	unknown
JESD-30 code	R-PDIP-T14
length	19.2 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	14
Maximum operating temperature	70 °C
Minimum operating temperature	-25 °C
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Package shape	RECTANGULAR
Package form	IN-LINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Maximum seat height	5.33 mm
Nominal supply voltage	5 V
surface mount	NO
technology	CMOS
Telecom integrated circuit types	MF SIGNALING CIRCUIT
Temperature level	OTHER
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	7.62 mm

M-993 Preview

M-993

Region 1 MF Tone Generator

Features

•

Generates standard CCITT R1 MF tones

•

Digital input control

•

Linear (analog) output

•

Power output capable of driving standard line

•

14-pin DIP

•

Single 5-Volt supply

•

Inexpensive 3.58 MHz time base

Applications

•

Telephone systems

•

Test equipment

Description

The M-993 is a monolithic CMOS integrated circuit

designed to generate multifrequency (MF) tone pairs

for use in trunk signaling. The tones generated con-

form to CCITT R1 signal recommendations and to

AT&T MF standards. The M-993 permits design engi-

neers to implement a highly accurate MF sender with

a minimum of space, power, and added components.

The accuracy of the tone frequencies is assured

through use of an easily obtained 3.58 MHz color burst

crystal or an external 3.58 MHz clock source.

Ordering Information

Part #

M-993

Description

14-pin plastic DIP

Pin Diagram

Block Diagram

DS-M993-R1

www.clare.com

M-993

Absolute Maximum Ratings

Storage Temperature

Operating Ambient Temperature

Any Input Voltage

-55 to 125°C

-25 to 70°C

7.0V

- 0.6 to V

+ 0.6V

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 opera-

tional sections of this data sheet is not implied. Exposure of

the device to the absolute maximum ratings for an extend-

ed period may degrade the device and effect its reliability.

Note:

1. Exceeding these ratings may permanently damage the M-993.

Specifications

Parameter

Power Supply

and Reference

Current Drain, IDD

REF

PIN:

Voltage

Internal Resistance from V

REF

to V

, V

Frequency Deviation

External CLock: (X

OUT

open)

Duty Cycle

, X

OUT

Loading:

Capacitance

Resistance

Frequency Deviation

Level

Distorting Components

Idle

OUTDRIVE Envelope Rise Time

DX, CE Pins:

Mute Pins:

VOL (ISINK = -100 µA)

VOH (ISOURCE = 100 µA)

Data Setup (t

DSRT

)

Data Hold (t

)

Chip Enable Fall (t

)

Tone On Delay (t

)

Tone Off Delay (t

)

Mute Delay from Outdrive (t

)

Min

4.75

48% of V

3.25

-0.01

- 0.2

-1.5

110

-35

2.5

- 1.5

200

Typ

2.0/4.0

Max

5.25

52% of V

6.75

+0.01

0.2

1.5

180

-60

0.5

1.5

200

Units

kΩ

MΩ

dBm

Notes

2, 3

Oscillator

Tone Output

Control

Timing

Unless otherwise noted, V

- V

= 5 VDC, Ta - 25° C

Notes:

1. All DC voltages are referenced to V

2. Vrms per tone, 540W 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.

7. At XOUT pin as compared to 3.579545 MHz.

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

9. Crystal oscillator active.

10. Measured 90% to 10%.

www.clare.com

Rev. 1

M-993

Pin Function

D0 - D3

D4-D5

MUTE

OUTDRIVE

REF

OUT

Function

Latches data and enables output (active low

input).

Data input pins. (See Data/Tone Selection.)

Leave open.

Output indicates that a signal is being

generated at OUTDRIVE.

Linear buffered tone output.

Most positive power supply input pin.

Internally generated mid-power supply

voltage (output).

Most negative power supply input pin.

Crystal oscillator or digital clock input.

Crystal oscillator output.

Data/Tone Selection

D0 Frequency (Hz)

1100

1700

700

900

700

1100

900

1100

700

1300

900

1300

1100

1300

700

1500

900

1500

1100

1500

1300

1500

1700

900

1700

1300

1700

700

1700

Use

Key Pulse (KP)

Digit 1

Digit 2

Digit 3

Digit 4

Digit 5

Digit 6

Digit 7

Digit 8

Digit 9

Digit 0

ST1

ST2

ST3

Power-On Reset Circuit

A typical control sequence for the M-993 is: (1) set

data lines Selection for data settings for a particular

tone pair output).to desired frequency selection, (2)

wait for data lines to settle, (3) drive the chip enable

(CE) low, (4) maintain CE low for desired tone duration

(Note: data lines may be changed after data hold

time), and (5) return CE to a logic high.

In a bus-oriented system, noise on the data lines may

propagate through the device and appear at the out-

put. To safeguard against this, use an external latch to

clock the data into the device. In addition, it is good

practice to bypass the V

REF

pin to ground with a small

capacitor (~0.01mF) to reduce power supply noise.

The designer should be aware of device timing

requirements and design accordingly. Beware of hard-

wiring the data input pins for dedicated tone genera-

tion. An RC network like that shown in Power-On

Reset Circuit should be used to momentarily reset the

device immediately following a power-up to ensure

reliable operation.

Rev. 1

www.clare.com

M-993

Timing Diagram

Expanded Timing Diagram

Typical Application

www.clare.com

Rev. 1

M-993

Mechanical Dimensions

Tolerances

Inches

Min

.015

.014

.045

.008

.735

.300

.240

.100 BSC

0°

.115

15°

.150

Max

.210

.022

.070

.014

.775

.325

.280

Metric (mm)

Min

Max

5.33

.38

.36

.56

1.1

1.8

.20

.36

18.7

19.7

7.6

8.3

6.1

7.1

2.54 BSC

0°

15°

2.9

4.1

Dimensions

(inches)

Rev. 1

www.clare.com

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