參數(shù)資料
型號(hào)： MT88L89AP
廠商： Mitel Networks Corporation
英文描述： 3V Integrated DTMFTransceiver with Adaptive Micro Interface
中文描述： 3V的綜合DTMFTransceiver自適應(yīng)微型接口
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 352K
代理商： MT88L89AP
MT88L89
Advance Information
4-126
Figure 2 - Pin Connections
Pin Description
Pin #
Name
Description
20
24
28
1
2
3
1
2
3
1
2
4
IN+
IN-
GS
Non-inverting
op-amp input.
Inverting
op-amp input.
Gain Select
. Gives access to output of front end differential amplifier for connection of
feedback resistor.
Reference Voltage
output (V
DD
/2).
Ground (0V).
Oscillator
input. This pin can also be driven directly by an external clock.
Oscillator
output. A 3.579545 MHz crystal connected between OSC1 and OSC2
completes the internal oscillator circuit. Leave open circuit when OSC1 is driven
externally.
Output from internal DTMF transmitter.
(Motorola)
Read/Write
or (Intel)
Write
microprocessor input. TTL compatible.
4
5
6
7
4
5
6
7
6
7
8
9
V
Ref
V
SS
OSC1
OSC2
8
9
10
11
12
13
TONE
R/W
(
WR
)
CS
10
12
14
Chip Select
input. This signal must be qualified externally by either address strobe
(AS), valid memory address (VMA) or address latch enable (ALE) signal, see Figure 12.
Register Select
input. Refer to Table 3 for bit interpretation. TTL compatible.
DS
(
RD) (Motorola)
Data Strobe
or (Intel)
Read
microprocessor input. Activity on this input is
only required when the device is being accessed. TTL compatible.
IRQ/CP
Interrupt Request/Call Progress
(open drain) output. In interrupt mode, this output
goes low when a valid DTMF tone burst has been transmitted or received. In call
progress mode, this pin will output a rectangular signal representative of the input signal
applied at the input op-amp. The input signal must be within the bandwidth limits of the
call progress filter, see Figure 8.
D0-D3
Microprocessor data bus. High impedance when CS = 1 or DS =0 (Motorola) or RD = 1
(Intel). TTL compatible.
ESt
Early Steering
output. Presents a logic high once the digital algorithm has detected a
valid tone pair (signal condition). Any momentary loss of signal condition will cause ESt
to return to a logic low.
St/GT
Steering Input/Guard Time
output (bidirectional). A voltage greater than V
TSt
detected
at St causes the device to register the detected tone pair and update the output latch. A
voltage less than V
TSt
frees the device to accept a new tone pair. The GT output acts to
reset the external steering time-constant; its state is a function of ESt and the voltage
on St.
11
12
13
14
15
17
RS0
13
15
18
14-
17
18
18-
21
22
19-
22
26
19
23
27
1
2
3
4
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
IN+
IN-
GS
VRef
VSS
OSC1
OSC2
TONE
R/W/WR
CS
VDD
St/GT
ESt
D3
D2
D1
D0
IRQ/CP
DS/RD
RS0
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
24
23
22
21
20
19
18
17
IN+
IN-
GS
VRef
VSS
OSC1
OSC2
TONE
R/W/WR
CS
VDD
St/GT
ESt
D3
D2
D1
D0
NC
NC
IRQ/CP
DS/RD
RS0
24 PIN SSOP
20 PIN CERDIP/PLASTIC DIP/SOIC
28 PIN PLCC
4
5
6
7
8
9
10
11
25
24
23
22
21
20
19
G
NC
VRef
VSS
OSC1
OSC2
NC
NC
D
3
2
1
2
2
2
1
1
1
1
1
1
1
N
I
I
V
S
E
T
R
C
R
N
I
NC
NC
NC
D3
D2
D1
D0
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MT88L89AS 制造商:Microsemi Corporation 功能描述:
MT88L89AS1 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 3V 20SOIC - Rail/Tube 制造商:Microsemi Corporation 功能描述:PB FREE 3V DTMF TRANSCEIVER 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TXRX DTMF 3V 20SOIC 制造商:Microsemi Corporation 功能描述:IC TXRX DTMF 3V 20SOIC
MT88L89ASR 制造商:Microsemi Corporation 功能描述:
MT88L89ASR1 制造商:Microsemi Corporation 功能描述:PB FREE 3V DTMF TRANSCEIVER 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 3V 20SOIC - Tape and Reel 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TXRX DTMF 3V 20SOIC 制造商:Microsemi Corporation 功能描述:IC TXRX DTMF 3V 20SOIC
MT88V32 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:8 x 4 High Performance Video Switch Array
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