IN91260CN Просмотр технического описания (PDF) - Integral Corp.
Номер в каталоге
Компоненты Описание
производитель
IN91260CN Datasheet PDF : 7 Pages
| |||
IN91260C
Pin Description
Pin No.
Designation
1
R1
2
R2
3
R3
4
R4
5
HK
6
M/B
7
MODE SELECT
8
OSCI
9
OSC0
Description
Keyinputs.
When a row and a column are connected, a key operation is activated.
Scanning signals are present on both the row and column pins during a valid
key-in condition.
Hook switch input.
When HK = VCC, an ON-Hook state exists.
When HK = GND, an Off-Hook state exists.
Dial pulse Make/Break ratio select input.
If M/B = VCC , the Make/Break ratio is 1/2.
If M/B = GND, the Make/Break ratio is 2/3.
Pulse/DTMF mode select input.
If MODE SELECT = VCC , Pulse mode is in effect.
If MODE SELECT = GND, DTMF mode is in effect.
Oscillator I/O.
A 480 KHz ceramic resonator and two 100 pF serial loading capacitors form
a complete oscillator circuit. The circuit is activated when HK is low.
Oscillator start-up time is typically 10 ms.
10
VCC
Positive power supply.
11
GND
Negative power supply.
12
TONE
DTMF signal output.
Pull-down load resistance is 10,000 Ω.
The minimum tone and IDP durations are built-in for both normal dialing
and redialing.
13
XMUTE
Transmit mute output.
This is an N-channel open drain output. The output transistor is switched on
while a sequence of digits is being dialed (for both Pulse and Tone modes).
Otherwise, it is switched off.
14
DP
Dial pulse output.
This pin is an N-channel open drain output. When DP output is low
(switched on), it serves as a break signal in Pulse dialing. For other
operations, DP output is normally high impedance (switched off).
15
C1
Keyinputs.
16
C2
When a row and a column are connected, a key operation is activated.
Scanning signals are present on both the row and column pins during a
17
C3
valid key-in condition.
18
C4
2
Share Link: 