T7256, T72561ML, T7256A.ML Selling Leads, Datasheet
MFG:50 Package Cooled:PLCC D/C:08+/09+
T7256, T72561ML, T7256A.ML Datasheet download
Part Number: T7256
MFG: 50
Package Cooled: PLCC
D/C: 08+/09+
T7256, T72561ML, T7256A.ML
- Table of contents:
Info of T7256
Info of T72561ML
Info of T7256A.ML
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About T7256A
PDF/DataSheet Download
Datasheet: T7256A
File Size: 1082270 KB
Manufacturer: AGERE [Agere Systems]
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About T720
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Datasheet: T720
File Size: 737893 KB
Manufacturer: POWEREX [Powerex Power Semiconductors]
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About T720
PDF/DataSheet Download
Datasheet: T720
File Size: 737893 KB
Manufacturer: POWEREX [Powerex Power Semiconductors]
Download : Click here to Download
T7256 General Description
The Lucent Technologies Microelectronics Group T7256 Single-Chip NT1 (SCNT1) Transceiver integrated circuit provides data (2B+D) and control information conversion between 2-wire (U-interface) and 4-wire (S/T-interface) digital subscriber loops on the integrated services digital network (ISDN). The T7256 conforms to the ANSI T1.601 standard and ETSI ETR 080 technical report for the U-interface and the ITU-T I.430 recommendation, ANSI T1.605 standard, and ETSI ETS 300 012 for the S/T-interface. The T7256 also supports digital pair gain and terminal adapter applications. The single +5 V CMOS device is packaged in a 44-pin plastic leaded chip carrier (PLCC).
T7256 Maximum Ratings
| Parameter |
Symbol |
Min |
Max |
Unit |
| dc Supply Voltage Relative to VSS |
VDD |
0.5 |
6.5 |
V |
| Power Dissipation (package limit) |
PD |
800 |
mW | |
| Storage Temperature Range |
Tstg |
55 |
150 |
°C |
| Voltage (any pin) with Respect to GND |
0.5 |
6.5 |
V |
T7256 Features
` U- to S/T-interface conversion for ISDN basic rate (2B+D) systems
- Integrated U- and S/T-interfaces
- Operates in stand-alone mode to provide U- and S/T-interface activation, control, and maintenance functions
- Serial microprocessor and time-division multiplexed (TDM) bus interfaces for enhanced NT1 operation and voice/data ports
- Automatic embedded operations channel (eoc) processing for ANSI T1.601 systems
- Low power consumption supporting line-powered NT1 (See table 45 on page 102, Question and Answers section, #53 for detailed power consumption information.)
- Idle-mode support (35 mW typical)
- Board-level testability support
` U-interface
- Conforms to ANSI T1.601 standard and ETSI ETR 080 technical report
- 2B1Q four-level line code
- Automatic ANSI maintenance functions (quiet mode and insertion loss mode)
` S/T-interface
- Conforms to ANSI T1.605 standard, ITU-T I.430 recommendation, and ETSI ETS 300 012 for NT operation
- Supports point-to-point and point-to-multipoint (passive bus) arrangements
- Supports S- and Q-channel multiframing operations (an external microprocessor is required for S- and Q-channel multiframing support)
` Serial microprocessor and TDM bus interfaces
- Supports inexpensive serial microprocessor
- Supports direct codec connection and voice/data ports
- Allows access to 2B+D data on TDM bus
` Other
- Single +5 V (±5%) supply
- 40°C to +85°C
- 44-pin PLCC
- Integrated U- and S/T-interfaces
- Operates in stand-alone mode to provide U- and S/T-interface activation, control, and maintenance functions
- Serial microprocessor and time-division multiplexed (TDM) bus interfaces for enhanced NT1 operation and voice/data ports
- Automatic embedded operations channel (eoc) processing for ANSI T1.601 systems
- Low power consumption supporting line-powered NT1 (See table 45 on page 102, Question and Answers section, #53 for detailed power consumption information.)
- Idle-mode support (35 mW typical)
- Board-level testability support
` U-interface
- Conforms to ANSI T1.601 standard and ETSI ETR 080 technical report
- 2B1Q four-level line code
- Automatic ANSI maintenance functions (quiet mode and insertion loss mode)
` S/T-interface
- Conforms to ANSI T1.605 standard, ITU-T I.430 recommendation, and ETSI ETS 300 012 for NT operation
- Supports point-to-point and point-to-multipoint (passive bus) arrangements
- Supports S- and Q-channel multiframing operations (an external microprocessor is required for S- and Q-channel multiframing support)
` Serial microprocessor and TDM bus interfaces
- Supports inexpensive serial microprocessor
- Supports direct codec connection and voice/data ports
- Allows access to 2B+D data on TDM bus
` Other
- Single +5 V (±5%) supply
- 40°C to +85°C
- 44-pin PLCC
T7256 Connection Diagram
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