Intersil CD22204
The CD22204 complete dual tone multiple frequency (DTMF) receiver detects a selectable group of 12 or 16 standard digits. The only externally required components are an inexpensive 3.579545MHz TV ‘‘colorburst’’ crystal (for frequency reference) and a bias resistor. This is a monolithic integrated circuit fabricated with low power, complementary symmetry CMOS processing.| Part No. | CD22204 |
|---|---|
| Datasheet | CD22204 Download |
| Manufacturer |  Intersil |
| Description | 5V Low Power Subscriber DTMF Receiver |
| Buy | Stock & Price |
FEATURES
● No Front End Band Splitting Filters Required● Single Low Tolerance 5V Supply
● Three-State Outputs for Microprocessor Based Systems
● Detects all 16 Standard DTMF Digits
● Uses Inexpensive 3.579545MHz Crystal
● Excellent Speech Immunity
● Output in 4-Bit Hexadecimal Code
● Excellent Latch-Up Immunity Pinouts CD22204 (PDIP) TOP VIEW D2 1 D1 2 EN 3 VDD 4 NC 5 14 D4 13 D8 12 DV 11 ATB 10 XIN 9 XOUT 8 VSS Ordering Information PART NUMBER CD22204E TEMP. RANGE (oC) 0 to 70 PACKAGE 14 Ld PDIP PKG. NO. E14.3 XEN 6 ANALOG 7 IN Functional Diagram 5 BANDSPLIT FILTER PREPROCESSOR/ LOW B/P FILTERS 12 DV 2 D1 DETECTORS AND SIGNALPROCESSING CIRCUITS HIGH B/P FILTERS 1 D2 14 D4 13 D8 3 EN VOLTAGE REG./REF. 4 VDD 8 VSS NC ANALOG IN 7 11 ATB 6 XEN XIN 10 CLOCK GENERATOR CHIP CLOCKS 9 XOUT NOTE: Pin numbers are for PDIP. 67 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. or 407-727-9207 | Copyright © Intersil Corporation 1999 CD22204 Abso...
