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PDF IN9270 Data sheet ( Hoja de datos )
| Número de pieza | IN9270 | |
| Descripción | DTMF RECEIVER | |
| Fabricantes | Integral | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de IN9270 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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TECHNICAL DATA
DTMF RECEIVER
High-Performance Silicon-Gate CMOS
IN9270
The IN9270 is a complete DTMF receiver integrating both the
bandsplit filter and digital decoder functions. The filter section uses
switched capacitor techniques for high- and low-group filters and dial-
tone rejection. Digital counting techniques are employed in the
decoder to detect and decode all 16 DTMF tone-pairs into a 4-bit
code. External component count is minimized by on-chip provision of
a differential input amplifier, clock-oscillator and latched 3-state bus
interface.
• Complete receiver in an 18-pin package.
• Excellent performance.
• CMOS, single 5 volt operation.
• Minimum board area.
• Central office quality.
• Low power consumption.
ORDERING INFORMATION
IN9270N
TA = -10° to 70° C
LOGIC DIAGRAM
PIN ASSIGNMENT
* Connect to GND
PIN 9 = GND
PIN 18 = VCC
PINS 5,6 = NO CONNECTION
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IN9270
DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND, VCC = 5 V ± 5%,
TA = -10 to +70°C)
Guaranteed Limits
Symbol
Parameter
Test Conditions
Min Typ Max
Unit
VIH Minimum High-Level
Input Voltage
VOUT =5 V
3.6
V
VIL Maximum Low-Level
Input Voltage
VOUT =5 V
1.4 V
VOH Minimum High-Level
Output Voltage
No Load
4.97
V
VOL Maximum Low-Level
Output Voltage
No Load
0.05 V
IIN Maximum Input Leakage VIN=VCC or GND
Current
±0.1 µA
ISO Maximum Pull Up
(Source) Current
OE = 0 V
24 µA
IOL Minimum Output-Low VOUT =0.4 V
(Sink) Current
0.8
mA
IOH Minimum Output-High VOUT =4.6 V
(Source) Current
0.35
mA
ICC Maximum Quiescent
Supply Current (per
Package)
VIN =VCC
11 mA
VTSt Steering Threshold
Voltage
2.2 2.5 V
RIN Input Impedance (Signal @ 1 KHz
Inputs 1,2)
8
MΩ
VREF
ROR
Output Voltage
Output Resistance
No Load
2.4
10
2.8
V
kΩ
IOZ Maximum Three-State Output in High-
Leakage current
Impedance State
VIN =VIL
VOUT=VCC or GND
±0.1 µA
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EXPANDED LOGIC DIAGRAM
IN9270
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11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet IN9270.PDF ] | |
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