My Inquiry
My Account
Infineon Technologies SAF 82525 N V2.2
.jpg)
- Part No.:
- SAF 82525 N V2.2
- Manufacturer:
- Infineon Technologies
- Category:
- Specialized
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
SAF 82525 N V2.2.pdf
- Description:
- IC INTERFACE SPECIALIZED 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,316
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SAF 82525 N V2.2 from Siemens is a High-Level Serial Communication Controller Extended (HSCX) IC implementing two independent full-duplex HDLC channels for X.25 LAPB, ISDN LAPD, and SDLC-NRM protocol handling. It features 64-byte FIFOs per channel, on-chip DPLL-based clock recovery per channel, 4 Mbit/s max data rate, and 8-bit demultiplexed adaptive bus interface compatible with Intel/Motorola microcontrollers.
For engineers reviewing the SAF 82525 N V2.2 datasheet, SAF 82525 N V2.2 pinout, SAF 82525 N V2.2 application, or SAF 82525 N V2.2 equivalent, key selection criteria include dual-channel HDLC offload capability, programmable time-slot assignment (1–256 bit), DMA-driven block transfers (up to 32 bytes), and support for transparent/non-auto/extended transparent operating modes in telecom and packet-switching systems.
Technical Context
The SAF 82525 N V2.2 implements layer-2 procedural support including full-duplex LAPB/LAPD and half-duplex SDLC-NRM with modulo-8/128 operation, programmable retry timeout, and maximum packet size checking. Its serial interface provides DPLL-based clock recovery per channel and supports multiple encoding schemes including NRZ, NRZI, and FM0.
It integrates two independent baudrate generators, each with programmable time-slot assignment and collision-resolving bus configuration. The CPU interface offers 8-bit demultiplexed bus access, four-channel DMA (two per channel), and interrupt-driven data transfer with dedicated DRQ/ACK lines for transmit/receive paths on both channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Two-channel HDLC link controller supporting LAPB, LAPD, SDLC-NRM at layer-2 |
| Max Data Rate | 4 Mbit/s per channel - enables high-speed ISDN B-channel and X.25 packet links |
| FIFO Depth | 64 bytes per channel/direction - buffers burst traffic and decouples serial I/O from CPU bus load |
| Operating Voltage | 5 V ±10% - compatible with legacy industrial and telecom 5 V logic systems |
| Power Consumption | 25 mW active / 4 mW standby at 4 MHz - low-power operation for always-on telecom interfaces |
| Package | P-LCC-44-1 (SMD) - hermetically sealed ceramic leadless chip carrier for high-reliability applications |
| Process Technology | Siemens Advanced CMOS 3 - ensures stable timing and low noise in synchronous serial environments |
Pinout & Package
P-LCC-44-1 (SMD) package: 44-pin ceramic leadless chip carrier with J-lead geometry, designed for high-frequency signal integrity and thermal stability in telecom line cards and ISDN terminal adapters.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6, 44 | VDD / GND | Power supply and ground pins - require local decoupling for stable 5 V operation across dual-channel activity |
| 2–5, 7–17, 39–43 | D0–D7, A0–A6, CS, RD/IC1, WR/IC0 | 8-bit demultiplexed address/data bus interface - supports direct connection to Intel 80C86 or Motorola 68000 family without glue logic |
| 18–28, 34–36 | IM1, ALE/IM0, INT, AxCLKA/B, RxCLKA/B, TxCLKA/B | Interrupt and clock control signals - enable synchronous framing, channel-specific clock sourcing, and mode-selectable interrupt generation |
| 29–30, 37–38 | DACKA/B, DRQRA/B, DRQTA/B | DMA handshake lines - allow zero-wait-state block transfers of up to 32-byte frames without CPU intervention |
| 22–27 | RxDA/B, TxDA/B, RTS A/B, CTS A/B, CD A/B | Serial I/O and modem control - support full handshaking and channel-isolated physical layer signaling per HDLC link |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent HDLC channels | Enables simultaneous X.25 LAPB and ISDN LAPD link management on single die - reduces board space and inter-chip skew |
| Programmable time-slot assignment | Per-channel 1–256 bit time-slot length setting - supports TDM-based PCM multiplexing in digital PBX and concentrator designs |
| On-chip DPLL per channel | Eliminates external clock recovery ICs - maintains frame sync under ±100 ppm clock drift in leased-line applications |
| 64-byte FIFO + DMA support | Reduces CPU interrupt overhead by >90% vs. byte-wise polling - critical for real-time packet forwarding in embedded routers |
| Transparent & extended transparent modes | Allows raw bitstream pass-through without HDLC framing - used in proprietary protocol gateways and test equipment |
Applications
| ISDN Terminal Adapter | X.25 Packet Switch Node |
|---|---|
Use Scenario: Connecting analog PSTN devices to digital ISDN networks via S/T interface. IC Role / Device Role / Timing Role: Dual-channel HSCX handles LAPD signaling on D-channel and user data on B-channels with independent clock recovery. Use Value: Eliminates need for separate DPLL and protocol engines - reduces BOM count and improves jitter tolerance over 2B+D links. | Use Scenario: Edge node in public X.25 network performing LAPB link establishment and frame relay. IC Role / Device Role / Timing Role: Manages full-duplex LAPB I-frames and S-frames with CRC-16 generation/checking and automatic retransmission. Use Value: Offloads 100% of layer-2 processing from host CPU - enables deterministic 10–100 ms frame turnaround in store-and-forward switches. |
| Digital PBX Line Card | Industrial Protocol Gateway |
Use Scenario: 30-channel E1 line termination in enterprise PBX with time-slot mapping to internal bus. IC Role / Device Role / Timing Role: Provides programmable time-slot assignment (1–256 bit) and collision-resolving bus configuration for multi-drop TDM backplane. Use Value: Enables dynamic allocation of 64 kbit/s slots across voice/data channels - supports mixed analog/digital extension support. | Use Scenario: Bridging legacy SDLC fieldbus (e.g., IBM 37xx) to modern Ethernet/IP infrastructure. IC Role / Device Role / Timing Role: Executes half-duplex SDLC-NRM with modulo-128 sequence numbering and error recovery in transparent mode. Use Value: Maintains bit-level compatibility with mainframe host controllers - avoids firmware rewrite during brownfield upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDLC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAB 82525 N | Same silicon, identical pinout and register map - differs only in ordering code and screening grade | No functional difference; SAB variant qualified for broader industrial temperature range | Select SAB 82525 N for extended temp (-40°C to +85°C) or higher reliability screening |
| SAF 82526 N | Single-channel version - pins 30, 36, 39 marked N.C.; no channel B DMA or serial I/O | Reduced feature set: one HDLC channel, one baudrate generator, no extended transparent mode on channel B | Choose SAF 82526 N when only one ISDN B-channel or X.25 link is required - saves PCB area and cost |
Compared with SAF 82525 N V2.2, the SAB 82525 N offers identical functionality with enhanced environmental qualification, while the SAF 82526 N provides hardware cost reduction at the expense of channel count and time-slot flexibility - selection depends strictly on required link density and operating environment.
Availability
SAF 82525 N V2.2 is available at Aetrix Electronics and suitable for ISDN terminal adapters, X.25 packet switch nodes, and digital PBX line cards requiring stable component supply and long-term obsolescence management.
Supply support for SAF 82525 N V2.2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Siemens Semiconductor Group (now Infineon Technologies) was a leading European semiconductor manufacturer specializing in industrial, telecom, and automotive ICs before its semiconductor division became Infineon in 1999.
The SAF 82525 belongs to Siemens' High-Level Serial Communication Controller (HSCX) product line, designed specifically for offloading HDLC protocol processing in ISDN, X.25, and SDLC-based telecom infrastructure equipment.
FAQ
What communication protocols does the SAF 82525 N V2.2 natively support?
The SAF 82525 N V2.2 natively executes LAPB (X.25), LAPD (ISDN), and SDLC-NRM protocols in auto-mode with full I-frame and S-frame handling, modulo-8/128 sequencing, CRC-16 generation/checking, and programmable retry timeout. It also supports transparent bitstream transmission without protocol framing in dedicated operating modes.
Does the SAF 82525 N V2.2 require an external crystal or oscillator?
No - the SAF 82525 N V2.2 includes on-chip clock generation circuitry and supports both external clock input and internal quartz-based timing. Section 10 of the datasheet specifies quartz requirements: fundamental-mode AT-cut crystals with 1–4 MHz frequency, ±100 ppm stability, and 30 pF load capacitance for reliable DPLL lock.
How is DMA configured for dual-channel operation?
DMA is configured per channel using dedicated DRQ/ACK pairs: DRQRA/DACKA for channel A receive, DRQTA/DACKA for channel A transmit, DRQRB/DACKB for channel B receive, and DRQTB/DACKB for channel B transmit. Each channel supports block transfers of 1–32 bytes with automatic FIFO management and status flagging upon completion.
What is the function of the ALE/IM0 pin?
ALE/IM0 serves dual purpose: as Address Latch Enable during multiplexed bus operation (Intel-style), or as Interrupt Mode 0 select in demultiplexed mode (Motorola-style). Its state determines whether the device uses edge-triggered or level-sensitive interrupt assertion and selects between 8-bit or 16-bit addressing modes per the selected microprocessor interface.
SAF 82525 N V2.2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- Serial
- Voltage - Supply:
- 4.75V ~ 5.25V
- Supplier Device Package:
- P-LCC-44-1
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
SAF 82525 N V2.2 FAQ
1.How can I place an order for SAF 82525 N V2.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SAF 82525 N V2.2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SAF 82525 N V2.2 reliable?
The price and inventory of SAF 82525 N V2.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAF 82525 N V2.2 is usually 5 days.
3.What payment methods are accepted for SAF 82525 N V2.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAF 82525 N V2.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAF 82525 N V2.2?
SAF 82525 N V2.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAF 82525 N V2.2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SAF 82525 N V2.2?
For technical support, including SAF 82525 N V2.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAF 82525 N V2.2 requirements.
6.How does Aetrix verify that SAF 82525 N V2.2 is sourced from the original manufacturer or authorized distributors?
All SAF 82525 N V2.2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SAF 82525 N V2.2 meets industry standards.
7.What is the process for return or replacement of SAF 82525 N V2.2?
All SAF 82525 N V2.2 units undergo pre-shipment inspection (PSI). If there is an issue with SAF 82525 N V2.2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SAF 82525 N V2.2 part is unused and in its original packaging.
Return procedure for SAF 82525 N V2.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SAF 82525 N V2.2 Tags
-
NVT4857UKAZ
NXP USA Inc.
-
TCA8418RTWR
Texas Instruments
-
PCA9546APWR
Texas Instruments
-
MD0100N8-G
Microchip Technology
-
PCA9548APW,118
NXP USA Inc.
-
PCA9540BDP,118
NXP USA Inc.
-
PCA9548APWR
Texas Instruments
-
PCA9546APW,118
NXP USA Inc.
-
PTN3360DBS,518
NXP USA Inc.
-
PCA9546ABS,118
NXP USA Inc.
-
PCA9518PWR
Texas Instruments
-
PCA9545APW,118
NXP USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
