TCM320AC39CDW Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TCM320AC39CDW is a voice-band audio processor DSP IC designed for telephone and voice communication applications, featuring voice-band signal processing in a 20-pin SOIC package. Integrates codec-compatible audio processing functions for POTS and consumer voice hardware. Available from distributors worldwide for legacy voice hardware repair and new consumer telephony designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- TCM320AC39CDW Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TCM320AC39CDW?
- Voice-band audio processor with integrated DSP functions handles telephone-grade audio encoding and decoding in a single 20-pin SOIC chip
- Consumer-grade 20-SOIC package (R-PDSO-G20) enables straightforward SMT placement on standard telephony PCBs with minimal footprint
- Single-function architecture simplifies firmware integration for POTS modem and caller ID hardware without multi-peripheral configuration overhead
- Compatible with standard voice-band codec signal chains operating at 8 kHz sample rate for PSTN-grade 300 Hz to 3.4 kHz audio bandwidth
What is TCM320AC39CDW used for?
The TCM320AC39CDW is targeted at consumer and enterprise telephony hardware such as analog telephone adapters, POTS line cards, and voice-band modem front-ends requiring integrated audio signal processing. Its single-function voice-band DSP architecture simplifies the analog front-end design for caller ID decoders, answering machine recording circuits, and DTMF tone generation and detection hardware. The 20-pin SOIC package makes it straightforward to retrofit into existing PCB layouts when replacing legacy voice processor ICs in telephone system maintenance scenarios.
What are the specifications of TCM320AC39CDW?
| Pbfree Code | No |
| YTEOL | 0 |
| Consumer IC Type | CONSUMER CIRCUIT |
| JESD-30 Code | R-PDSO-G20 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Where can I find the TCM320AC39CDW datasheet?
TCM320AC39CDW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TCM320AC39CDW?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What audio bandwidth and sample rate does TCM320AC39CDW support for POTS voice-band applications?
The TCM320AC39CDW is designed for standard voice-band audio processing at an 8 kHz sample rate, covering the 300 Hz to 3.4 kHz frequency range defined by ITU-T G.711 for PSTN telephony. This bandwidth is sufficient for full intelligibility in telephone speech and for DTMF tone signaling at the standard frequencies of 697 Hz to 1633 Hz. The 8 kHz sample rate also aligns with PCM codec standards used in analog telephone line interfaces and legacy modem front-ends.
For a legacy telephone line card repair, what package and pin count does TCM320AC39CDW use?
The TCM320AC39CDW is housed in a 20-pin SOIC package (JEDEC R-PDSO-G20) with standard 1.27 mm lead pitch, making it compatible with a wide range of legacy PCB footprints used in 1990s and 2000s-era telephone hardware. The rectangular SOIC body measures approximately 12.8 mm in length, and standard SOIC 20 footprints are supported by all major PCB CAD tools. This package simplifies direct replacement of failed voice processor ICs in analog telephone adapters and PBX line cards without PCB modification.
How does TCM320AC39CDW integrate into a DTMF tone detection or caller ID decoder circuit?
The TCM320AC39CDW voice-band processor integrates DSP functions that process audio signals in the 300 Hz to 3.4 kHz band, which encompasses the DTMF tone pairs at 697/770/852/941 Hz (row) and 1209/1336/1477/1633 Hz (column). Its single-function architecture means the IC focuses exclusively on voice-band signal conditioning, and external microcontroller logic reads the decoded tone or caller ID FSK data via the standard interface. Operating from plastic/epoxy 20-SOIC at standard SMT reflow conditions allows integration into low-cost consumer telephone PCBs.
What should procurement engineers know about TCM320AC39CDW's lifecycle status when sourcing for a new design versus a repair application?
The TCM320AC39CDW carries a YTEOL of 0, indicating it is at or past its estimated end-of-life and is not recommended for new designs. Procurement for active production should investigate alternative voice-band codec ICs such as Si3018 or STLC7550 that offer equivalent 8 kHz voice-band processing in more modern packages. However, for maintenance and repair of installed telephony equipment, the TCM320AC39CDW may still be sourced from authorized distributor excess inventory or aftermarket channels, and the 20-pin SOIC footprint simplifies direct replacement.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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