TECHNICAL DATA

Tone/Pulse Dialer with Handsfree Control and Flash Function

IL91214A and IL91214B are tone/pulse dialers designed for providing standard DTMF or pulse
signals. The ICs enable to:

generate standard DTMF or pulse signals of dialing as well as "flash" pulses;

store and redial last number;

generate pause in the transmitted package of dial signals;

ICs are designed to be used in telephone sets.

PIN DESCRIPTION

MODE IN

OSCI

OSCO

XMIT MUTE

Vss

Vdd

TONE

MODE IN

OSCI

OSCO

XMIT MUTE

Vss

Vdd

TONE

MODE OUT

Fig. 1.

Pin configuration in package

I
L

9
1
2
1
4
A

I
L

9
1
2
1
4
B

Pin #

A B

Designation Description

1 1

Hook switch input

2 2

MODE IN

MODE IN = V

: pulse mode, 10 Hz,

/ = 1/2,
MODE IN = V

: tone mode,

MODE IN = floating mode,
20

Hz,

/ = 1/2

3 3

OSCI

Oscillator input

4 4

OSCO

Oscillator output

5 5

Ground

6 6

Supply output

7 7

TONE

Tone dialing output

8 8

XMIT MUTE

Dialing transmission mute output

MODE OUT

Mode output pin

Key-in tone output

9 11

Dialing pulse output

10 12

Keyboard column input

11 13

Keyboard column input

12 14

Keyboard column input

13 15

Keyboard row input

14 16

Keyboard row input

15 17

Keyboard row input

16 18

Keyboard row input

IL91214 A, IL91214B

DC electrical characteristics

= 3.5 V, V

= 0 V, F

OSC

= 3.579 Hz, T = 25

C, unless otherwise specified)

Parameter Symbol

Min.

Typ

Max.

Condition

2.0 5.5

Pulse

mode

Supply voltage, V

2.0 5.5

Tone

mode

Memory retention voltage, V

Memory retention current, u *

0.05

0.4

= 1.0 V

HK = V

DDP

0.32

1.0

Pulse

Operation current,

DDT

0.6

2.0 Tone

All outputs

unloaded

0.03

0.05

HK=V

Standby current, u *

0.5 10

All outputs unloaded.
No key selected.
V

=1.5V

0.8 V

Input voltage, V

0.2

= 3.5 V

Input current
R1-R4, u

115

584 730 876

Column

Tone out voltage, V

456 570 684

Row

=3.5V

Sink current
XMUTE,

OL1

0.9 5.3

=3.5V, V

=0.4V

Sink current
DP,

OL2

1.1 5.3

=3.5V, V

=0.4V

Distortion, %

DIS %

* - in this mode IC functioning is not guaranteed.

AC characteristics

= 3.5 V, V

= 0 V, F

OSC

= 3.579 Hz, T = 25

C, unless otherwise specified)

Condition

Parameter Symbol

Min.

Typ

Max.

Dialing speed,

pps

33.3

M/B=1/2

Make time, s T

16.7

M/B=1/2

66.6

M/B=1/2

Break time, s

33.3

M/B=1/2

824

pps

Inter-digit pause time, s T

IDP

458

pps

Pause time, s

PAU

2.2

Auto-redial break time, s

AOBK

2.2

IL91214 A, IL91214B

Parameter Symbol

Min.

Typ

Max.

Condition

Delay time key valid to signal out, s T

Key-in debounce, s T

Key-in tone duration, s T

KTD

Key-in tone frequency, Hz

437

Minimal tone duration time, s T

MFD

Minimum tone inter-digit pause, s T

TIDP

Redial tone duration, s T

MFDR

Redial tone inter-digit duration, s T

TIDPR

Values of generated frequencies

R/C

Frequency

Error, %

Unit

Conditions

697 +

0.31 Hz

770 +

0.19 Hz

852 +

0.03 Hz

941 +

0.10 Hz

1.209 +

0.57

1.336 -

0.32

1.477 -

0.35

FOSC = 3.579 Hz

Absolute maximum ratings

Parameter

Absolute maximum value

Supply voltage
Input voltage
Output voltage
Output voltage
(DP, XMIT MUTE).
Tone output current
Power dissipation
Storage temperature

OUT

TONE

STG

6.0V

-0.3V ~ V

+0.3V

-0.3V ~ V

+0.3V

1.2V

500 W

-40

~ +125

IL91214 A, IL91214B

Pulse dialing mode.

Key input

XMIT MUTE

21 s

KTD

(23 s), f = 437 Hz

2 1

: debouncing time 21 s

2. Tone dialing mode.

Key input

3. Redialing.

XMIT MUTE

2.3 s

2.5 s

TONE

TID

MODE OUT

Key input

XMIT MUTE

MFD

2.5 s

TONE

MODE OUT

TIDP

IL91214 A, IL91214B

4. Switching mode operation (MODE IN control).

2 3

*/T

XMIT MUTE

Key input

MODE IN

MODE OUT

TONE

5. Switching mode operation (*/T key entry).

2 3

*/T

Key input

MODE IN

MODE OUT

XMIT MUTE

TONE

2.5

IL91214 A, IL91214B

N SUFFIX PLASTIC DIP

(MS - 001BB)

Symbol

MIN

MAX

18.67

19.69

6.1

7.11

5.33

0.36

0.56

1.14

1.78

�

2.92

3.81

NOTES:

7.62

8.26

Dimensions "A", "B" do not include mold flash or protrusions.

0.2

0.36

Maximum mold flash or protrusions 0.25 mm (0.010) per side.

0.38

D SUFFIX SOIC

(MS - 012AC)

Symbol

MIN

MAX

9.8

3.8

1.35

1.75

0.33

0.51

0.4

1.27

�

NOTES:

0.1

0.25

Dimensions A and B do not include mold flash or protrusion.

0.19

0.25

Maximum mold flash or protrusion 0.15 mm (0.006) per side

5.8

6.2

for A; for B 0.25 mm (0.010) per side.

0.25

0.5

5.72

2.54

7.62

1.27

Dimension, mm

C M

R x 45

SEATING

PLANE

0.25 (0.010) M T

-T-

SEATING

PLANE

0.25 (0.010) M T

-T-

IL91214 A, IL91214B

N SUFFIX PLASTIC DIP

(MS - 001AC)

Symbol

MIN

MAX

22.35

23.37

6.1

7.11

5.33

0.36

0.56

1.14

1.78

�

2.92

3.81

NOTES:

7.62

8.26

Dimensions "A", "B" do not include mold flash or protrusions.

0.2

0.36

Maximum mold flash or protrusions 0.25 mm (0.010) per side.

0.38

D SUFFIX SOIC

(MS - 013AD)

Symbol

MIN

MAX

10.1

10.5

7.4

7.6

2.35

2.65

0.33

0.51

0.4

1.27

NOTES:

�

Dimensions A and B do not include mold flash or protrusion.

0.1

0.3

Maximum mold flash or protrusion 0.15 mm (0.006) per side

0.23

0.32

for A; for B 0.25 mm (0.010) per side.

10.65

0.25

0.75

2.54

7.62

1.27

Dimension, mm

C M

R x 45

SEATING

PLANE

0.25 (0.010) M T

-T-

SEATING
PLANE

0.25 (0.010) M T

-T-

Электронный компонент: IL91214B