CD22859 INTERSIL | Alldatasheet

Document overview

  • Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
  • PDF pages: 5

Technical content

Features

  • Mute Drivers On-Chip
  • Device Power can Either be Regulated DC or Telephone Loop Current
  • Use of an Inexpensive 3.579545MHz TV Crystal Provides High Accuracy and Stability for all Frequencies

Applications

  • For Use In Dual-tone Telephone Dialing Systems Pinout CD22859 (PDIP) TOP VIEW

Ordering Information

TEMP. RANGE ( oC) PACKAGE PKG. NO. CD22859E -40 to 85 16 Ld PDIP E16.3 VDD TX VSS OSC2 OSC1 VOUT RX CD Data Sheet February 1999 File Number 1257.4 [ /Title (CD22 859) /Sub- ject (Monol ithic Sili- con COS/ MOS Dual- Tone Multi- fre- quency Tone Gener- ator) /Autho r () /Key- words (Har- ris Semi- con- ductor, Tele- com, SLICs, SLACs , Tele- phone, Tele- phony, WLL, Wire- less OBSOLETE PRODUCT NO RECOMMENDED REPLA CEMENT Call Central Applications 1-800-442-7747or email: centapp@harris.com

Absolute Maximum Ratings Thermal Information Power Dissipation, PD Operating Conditions oC to 85oC CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operationo ft h e device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Electrical SpecificationsTA = -25oC to 60oC, All Voltages Referenced to VSS = 0V PARAMETER V DD (V) MIN MAX UNITS DYNAMIC DC SUPPLY VOLTAGE Tone Generation Mode with Valid Input (Note 1) 2.5 10 V Non-Tone Generation (Note 2) 1.7 10 V DYNAMIC OPERATING CURRENT Tone Generation Mode (Outputs Unloaded) 3.7 - 2.7 mA 9.3 - 13 mA No Keydown Mode 3.7 - 100 µA 9.3 - 200 µA Input Pull-Up Current 3 - 10 - 400 µA Input Low Voltage (V IL) Maximum 3 - 10 - 0.2V DD V Input Low Voltage (VIH) Minimum 3 - 10 - 0.8V DD V Electrical SpecificationsTA = -25oC to 60oC PARAMETER V DD (V) V O (V) MIN MAX UNITS STATIC TONE OUTPUTS (R L = 82Ω ) VO ; Dual-Tone Output 3.7 - 9.3 - 350 700 mV RMS VO (CL); Single-Tone Output, Column (Note 3) 3.7 - 9.3 - 300 - mV RMS VO (RL); Single-Tone Output, Row (Note 4) 3.7 - 9.3 - 260 - mV RMS Distortion (Note 5) 3.9 - 9.3 - - 10 % Rise and Fall Time (Dual-Tone Out) (Note 6) 3.9 - 9.3 - - 5 ms Pre-Emphasis (Note 7) 3.9 - 9.3 - 1 3 dB Output Frequency (Note 8) 3.9 - 9.3 - (Nom. -1%) (Nom. +1%) Hz CD22859

STATIC MUTE OUTPUT CURRENT Transmitter 1.7 1.2 -0.5 - mA IOH (Source) 10 9.5 -3.4 - mA IOL (Sink) 10 2.5 - 10 µA Receiver 1.7 1.2 -0.5 - mA IOH (Source) 10 9.5 -3.4 - mA IOL (Sink) 10 2.5 - 10 µA NOTES: 1. All logic and counters functional. 2. Mute switches remain open. 3. Two or more row inputs low and one column input low. 4. Two or more column inputs low and one row input low. 5. Distortion is defined as: The ratio of all extraneous frequency components generated in the voiceband 0.5kHz to 3kHz, to the power of the dual- tone signal, measure across R the high-band frequency tone. 6. Tone rise time is defined as the time for each of the 2 DTMF frequencies to attain 90% of full amplitude, measured from the time when a row and column signal are driven low. 7. Pre-emphasis is the ratio of the high-group level to the low-group level. 8. Refer to Figure 1 for standard DTMF frequencies. 9. Corresponds to normal dual-tone operation. 10. Corresponds to single-tone generation mode. Electrical SpecificationsTA = -25oC to 60oC (Continued) PARAMETER V DD (V) V O (V) MIN MAX UNITS Distortion= V L2V H 2+ CD22859

FIGURE 1. BELL AND NOMINAL OUTPUT FREQUENCIES (IN PARENTHESIS) FOR 3.579545MHz CRYSTAL Column 1, Column 2, Column 3, Column 4.

FIGURE 2. INTERFACE WITH STANDARD K500 TELEPHONE NETWORK