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The CD22202 and CD22203 complete dual-tone multiple frequency (DTMF) receivers detect a selectable group of 12 or 16 standard digits. No front-end pre-filtering is needed. The only externally required components are an inexpensive 3.579545MHz TV “colorburst’’ crystal (for frequency reference) and a bias resistor. Extremely high system density is possible thro.
• Central Office Quality
• No Front End Band Splitting Filters Required
• Single, Low Tolerance, 5V Supply
• Detects Either 12 or 16 Standard DTMF Digits
• Uses Inexpensive 3.579545MHz Crystal for Reference
• Excellent Speech Immunity
• Output in Either 4-Bit Hexadecimal Code or Binary Coded 2-of-8
• Synchronous or Handshake Interface
• Three-State Outputs
• Excellent Latch-Up Immunity
Ordering Information
PART NUMBER CD22202E CD22203E TEMP. RANGE (oC) 0 to 70 0 to 70 PACKAGE 18 Ld PDIP 18 Ld PDIP PKG. NO. E18.3 E18.3
Pinout
CD22202, CD22203 (PDIP) TOP VIEW
D1 HEX/B28 EN IN1633 VDD ED (203 ON.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | CD22202 |
Intersil Corporation |
5V Low Power DTMF Receiver |
|
| 2 | CD22204 |
Intersil Corporation |
5V Low Power Subscriber DTMF Receiver |
|
| 3 | CD22212 |
Harris Semiconductor |
CMOS Single Chip 1200BPS MODEM |
|
| 4 | CD22212E |
RCA Solid State |
(CD22212xx) CMOS Logic Integrated Circuits |
|
| 5 | CD22212E1 |
RCA Solid State |
(CD22212xx) CMOS Logic Integrated Circuits |
|
| 6 | CD22212Q |
RCA Solid State |
(CD22212xx) CMOS Logic Integrated Circuits |
|
| 7 | CD22100 |
Intersil Corporation |
CMOS 4 x 4 Crosspoint Switch with Control Memory High-Voltage Type (20V Rating) |
|
| 8 | CD22100 |
RCA |
CMOS 4 x 4 Crosspoint Switch |
|
| 9 | CD22101 |
Intersil Corporation |
CMOS 4 x 4 x 2 Crosspoint Switch with Control Memory |
|
| 10 | CD22101 |
RCA |
CMOS 4 x 4 x 2 Crosspoint Switch |
|
| 11 | CD22102 |
Intersil Corporation |
CMOS 4 x 4 x 2 Crosspoint Switch with Control Memory |
|
| 12 | CD22102 |
RCA |
CMOS 4 x 4 x 2 Crosspoint Switch |
|