General Description
This CMOS device is designed for switching PCM-encoded voice or data,under microprocessor control, in a modern digital exchange, PBX or Central Office. It provides simultaneous connections for up to 256 64kbit/s channels. Each of the eight serial inputs and outputs consist of 32 64kbit/s channels multiplexed to form a 2048kbit/s ST-BUS stream. In addition, the IMP8980D provides microprocessor read and write access to individual ST-BUS (Serial Telecom Bus) channels.

Features
*ST-BUS compatible
*8-line x 32-channel inputs
*8-line x 32-channel outputs
*256 ports non-blocking switch
*Single power supply (+5V)
*30mW power consumption
*Microprocessor-control interface
*Pin-compatible with Mitel MT8980

IMP8980DC, IMP8980DE, IMP8980DP, IMP8980DP/T

Trackback :: http://datasheetblog.com/trackback/2715

댓글을 달아 주세요 Comment

Description
 The CD22354A and CD22357A are monolithic silicongate, double-poly CMOS integrated circuits containing the band-limiting filters and the companding A/D and D/A conversion circuits that conform to the AT&T D3/D4 specifications and CCITT recommendations.
The CD22354A provides the AT&T m-law and the CD22357A provides the CCITT A-law companding characteristic.
The primary applications for the CD22354A and CD22357A are in telephone systems.
These circuits perform the analog and digital conversions between the subscriber loop and the PCM highway in a digital switching system.
The functional block diagram is shown below.
With flexible features, including synchronous and asynchronous operations and variable data rates, the CD22354A and CD22357A are ideally suited for PABX, central office switching system, digital telephones as well as other applications that require accurate A/D and D/A conversions and minimal conversion time.

Features
* Meets or Exceeds All AT&T D3/D4 Specifications and CCITT Recommendations
* Complete CODEC and Filtering Systems: No External Components for Sample-and-Hold and Auto-Zero Functions.
Receive Output Filter with (SIN X)/X Correction and Additional 8kHz Suppression
* Variable Data Clocks - From 64kHz . . . . . . . . . . . . . . . . . . . . . 2.1MHz
* Receiver Includes Power-Up Click Filter
* TTL or CMOS-Compatible Logic
* ESD Protection on All Inputs and Outputs

Applications
* PABX
* Central Office Switching Systems
* Accurate A/D and D/A Conversions
* Digital Telephones
* Cellular Telephone Switching Systems
* Voice Scramblers - Descramblers
* T1 Conference Bridges
* Voice Storage and Retrieval Systems
* Sound Based Security Systems
* Computerized Voice Analysis
* Mobile Radio Telephone Systems
* Microwave Telephone Networks
* Fiber-Optic Telephone Networks

CD22354AE
CD22357AE
CD22357A

TAG CMOS, CODEC, PCM

Trackback :: http://datasheetblog.com/trackback/1664

댓글을 달아 주세요 Comment

Description
The HS0038A2. – series are miniaturized receivers for infrared remote control systems. PIN diode and preamplifier are assembled on lead frame, the epoxy package is designed as IR filter.
The demodulated output signal can directly be decoded by a microprocessor. HS0038A2. is the
standard IR remote control receiver series, supporting all major transmission codes.

Features
* Photo detector and preamplifier in one package
* Internal filter for PCM frequency
* Improved shielding against electrical field disturbance
* TTL and CMOS compatibility
* Output active low
* Low power consumption
* High immunity against ambient light
* Continuous data transmission possible (800 bit/s)
* Suitable burst length .10 cycles/burst


Trackback :: http://datasheetblog.com/trackback/1272

댓글을 달아 주세요 Comment

Description
The TSOP17.. – series are miniaturized receivers for infrared remote control systems. PIN diode and preamplifier are assembled on lead frame, the epoxy package is designed as IR filter. The demodulated output signal can directly be decoded by a microprocessor. TSOP17.. is the standard IR remote control receiver series, supporting all major transmission codes.

Features
ㅁPhoto detector and preamplifier in one package
ㅁInternal filter for PCM frequency
ㅁ Improved shielding against electrical field disturbance
ㅁ TTL and CMOS compatibility
ㅁ Output active low
ㅁ Low power consumption
ㅁ High immunity against ambient light
ㅁ Continuous data transmission possible (up to 2400 bps)
ㅁ Suitable burst length .10 cycles/burst

TSOP1730 TSOP1736 TSOP1738 TSOP1756
TAG PCM

Trackback :: http://datasheetblog.com/trackback/410

댓글을 달아 주세요 Comment