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Renesas 72V70180PFG
- Part No.:
- 72V70180PFG
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 64-LQFP
- Datasheet:
-
72V70180PFG.pdf
- Description:
- IC MULTIPLEXER 1 X 4:4 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,326
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Product details
Overview
IDT72V70180PFG from Integrated Device Technology is a 3.3 V, 128 × 128 non-blocking time slot interchange (TSI) digital switch optimized for ST-BUS®/GCI telephony interfaces. It supports four 2.048 Mb/s serial streams, delivers per-channel variable or constant throughput delay, and operates across –40°C to +85°C with 5 V–tolerant inputs. It serves as the core TSI fabric in carrier-grade voice/data concentrators and multi-port channel banks.
For engineers reviewing the IDT72V70180PFG datasheet, IDT72V70180PFG pinout, IDT72V70180PFG application, or IDT72V70180PFG equivalent, key selection criteria include frame offset calibration capability, per-channel high-impedance control, microprocessor interface mode flexibility (Intel/Motorola multiplexed or non-multiplexed), and ST-BUS®/GCI auto-detection - all confirmed for this exact PFG-packaged variant.
Technical Context
The IDT72V70180PFG implements a dual-memory architecture: data memory (up to 128 bytes) stores incoming PCM time-slot data, while connection memory (128 × 16-bit locations) defines source-to-destination channel mappings. Its timing unit synchronizes to an external 4.096 MHz master clock and 8 kHz F0i frame pulse, automatically detecting ST-BUS® (falling-edge frame sync) or GCI (rising-edge frame sync) formats.
It supports two distinct switching modes: Connection Mode (hardware-directed path routing via preloaded connection memory) and Processor Mode (microprocessor writes time-slot data directly to TX output buffers). Per-channel control bits enable independent configuration of delay mode (V/C), loopback, output enable, and processor/connection selection - all accessible via its parallel microport.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Capacity | 128 × 128 channels at 64 kbit/s per channel; enables full-mesh TDM interconnection in E1/T1 systems. |
| Data Rate per Stream | 2.048 Mb/s (E1 standard); four bidirectional serial streams (RX0–RX3 / TX0–TX3) supported simultaneously. |
| Master Clock | 4.096 MHz; precisely twice the serial bit rate, required for synchronous sampling and bit-cell alignment. |
| Throughput Delay Modes | Per-channel selectable: Variable delay (min. 3 time-slots) for low-latency voice; Constant delay (1–94 time-slots) for frame-integrity-critical data. |
| Input Frame Offset Range | +0 to +4.5 CLK periods (½-cycle resolution); compensates for inter-stream skew in distributed backplane systems. |
| Supply & I/O | 3.3 V core supply; I/O pins are 5 V tolerant - eliminates level-shifting in mixed-voltage legacy telecom boards. |
| Operating Temperature | –40°C to +85°C; qualified for industrial and outdoor telecom equipment deployment without derating. |
Pinout & Package
Package: 64-pin Thin Plastic Quad Flatpack (TQFP), 14 mm × 14 mm, 0.80 mm pitch (order code PF). Pin 1 marked by dot; IC pins (internal connections) must be tied to GND for normal operation; DNC pins must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pins 1, 24, 41) | Power Supply | +3.3 V core supply rail; decoupling required at each pin per high-frequency switching noise mitigation. |
| GND (Pins 2, 23, 32, 33, 40, 47) | Ground Reference | Dedicated ground pins minimize ground bounce across analog-sensitive serial I/O and digital control domains. |
| RX0–RX3 (Pins 34–37) | Serial Input | 2.048 Mb/s E1 input streams; accept ST-BUS® or GCI framing; auto-detected via F0i/FE timing analysis. |
| TX0–TX3 (Pins 9–12) | Serial Output | Three-state outputs; individually controllable via ODE pin and per-channel OE bit in connection memory. |
| F0i (Pin 38) | Frame Sync Input | 8 kHz frame pulse; auto-identifies polarity and format (ST-BUS® falling edge or GCI rising edge). |
| FE (Pin 39) | Frame Evaluation | Enables measurement of input stream skew relative to F0i; used with FAR register for calibration. |
| CLK (Pin 42) | Master Clock Input | 4.096 MHz clock; drives all serial shift registers and internal timing units; jitter-sensitive node. |
| RESET (Pin 49) | Asynchronous Reset | Active-low; clears internal registers and forces TX outputs to high-impedance; min. 100 ns pulse width. |
| A0–A7 (Pins 50–57) | Address Bus | Non-multiplexed CPU addressing; selects internal registers (A7=0) or data/connection memory (A7=1). |
| AD0–AD7 (Pins 25–31) | Address/Data Bus | Multiplexed mode only; carries lower address bits during ALE phase, then data during RD/WR cycle. |
| D8–D15 (Pins 17–22) | Data Bus High | Upper byte of 16-bit microprocessor interface; used with AD0–AD7 for full parallel access. |
| CS (Pin 58) | Chip Select | Active-low enable for microport; required assertion for any register/memory read/write operation. |
| DS/RD (Pin 61) | Data Strobe / Read | Motorola DS (active-HIGH) or Intel RD (active-LOW); determines bus timing mode with IM and AS/ALE. |
| R/W / WR (Pin 60) | Read/Write Control | Motorola R/W (data direction) or Intel WR (write strobe); configures microport for target CPU architecture. |
| AS/ALE (Pin 59) | Address Strobe | Latches address on AD0–AD7 in multiplexed mode; tied to GND in non-multiplexed Motorola configuration. |
| IM (Pin 56) | Interface Mode | HIGH = multiplexed bus; LOW = non-multiplexed Motorola; sets fundamental microport protocol behavior. |
| DTA (Pin 16) | Data Transfer Ack | Active-low open-drain signal; indicates completion of microport cycle; requires external pull-up. |
| ODE (Pin 15) | Output Drive Enable | Global TX output enable; overrides per-channel OE bits when LOW (forces all TX to high-Z). |
Key Features
| Feature | Design Value |
|---|---|
| ST-BUS®/GCI Auto-Detection | Eliminates manual configuration: device analyzes F0i/FE timing to select correct frame sync polarity and bit-sampling edge. |
| Per-Stream Input Offset Calibration | Compensates up to +4.5 CLK periods of inter-stream skew using programmable FOR registers - critical for multi-chip TSI arrays. |
| Processor + Connection Dual Mode | Enables both hardware-routed (low-latency) and software-controlled (flexible) time-slot routing on same device. |
| Loopback per Channel | LPBK bit in each connection memory location routes TXn,m → RXn,m internally for real-time diagnostics without external wiring. |
| Memory Block Programming | Loads identical high-order bits (11–15) into all 128 connection memory locations in two frames - accelerates initialization. |
| 5 V–Tolerant Inputs | Accepts 5 V logic levels on all control and address pins, enabling direct interfacing with legacy 5 V microcontrollers and FPGAs. |
Applications
| Channel Bank TSI Fabric | E1 Line Interface Unit (LIU) |
|---|---|
|
Use Scenario: Aggregating 32 E1 lines (1024 channels) into a centralized switching matrix using multiple IDT72V70180PFG devices in cascade. IC Role / Device Role / Timing Role: Primary TSI switch providing non-blocking 128×128 channel routing with per-stream frame offset compensation to align skewed backplane paths. Use Value: Enables deterministic latency and zero frame slips across multi-board E1 concentrators operating at full 2.048 Mb/s line rate. |
Use Scenario: Front-end TSI stage in an E1 LIU that extracts, processes, and reinserts individual 64 kbit/s voice channels before packetization. IC Role / Device Role / Timing Role: Time-slot interchange element performing channel reordering, drop/insert, and high-impedance mute under microprocessor control. Use Value: Supports dynamic channel provisioning and maintenance functions (e.g., loopback testing per channel) without interrupting other active channels. |
| Multi-Port VoIP Gateway | Digital Cross-Connect System (DCS) |
|
Use Scenario: Bridging TDM voice traffic between PSTN E1 trunks and VoIP media gateways using TDM-over-IP encapsulation. IC Role / Device Role / Timing Role: TSI fabric aligning and multiplexing 128 voice channels onto a single high-speed serial stream for DSP interface. Use Value: Maintains strict 125 μs frame boundaries and sub-time-slot delay consistency required for toll-quality voice transport. |
Use Scenario: Core switching element in a modular DCS chassis supporting hot-swappable E1/T1 interface cards and centralized TSI resources. IC Role / Device Role / Timing Role: Reconfigurable digital switch providing non-blocking connectivity between any input and output E1 port with <100 ns setup/hold timing. Use Value: Delivers carrier-grade reliability with per-channel fault isolation and automatic frame sync recovery after card insertion/removal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar time slot interchange applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT72V70160PFG | 64 × 64 capacity (half the channel count); identical 2.048 Mb/s streams, package, and feature set. | Suitable for smaller-scale E1 aggregation (≤64 channels) or cost-sensitive designs where full 128×128 is unused. | Select when system channel requirements fit within 64×64 and BOM cost reduction is prioritized over future scalability. |
| MC145506CFN | 64 × 64 TSI; 3.3 V operation; lacks ST-BUS®/GCI auto-detection, frame offset calibration, and memory block programming. | Requires external logic for frame sync handling and manual calibration; limited to simpler, fixed-configuration TSI tasks. | Choose only if legacy design reuse mandates MC145506 footprint compatibility and advanced calibration features are unnecessary. |
Compared with IDT72V70180PFG, IDT72V70160PFG offers identical functionality at half scale - ideal for incremental capacity builds - while MC145506CFN trades configurability and calibration for basic interoperability, demanding more external support circuitry and firmware overhead.
Availability
IDT72V70180PFG is available at Aetrix Electronics and suitable for E1 channel banks, digital cross-connect systems, and VoIP gateway TDM interface modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for telecom infrastructure deployments.
Supply support for IDT72V70180PFG 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
Integrated Device Technology (IDT) was a fabless semiconductor company specializing in timing, memory interface, RF, and high-performance interconnect solutions before its acquisition by Renesas Electronics in 2019.
IDT72V70180PFG belongs to IDT's legacy TSI digital switch product line, engineered specifically for carrier-class telephony systems requiring deterministic low-latency time-slot routing, ST-BUS®/GCI compliance, and robust multi-stream synchronization.
FAQ
What is the maximum frame offset delay supported by the IDT72V70180PFG?
The IDT72V70180PFG supports a maximum input frame offset delay of +4.5 master clock (CLK) periods, with ½-clock-period resolution. This is programmed per input stream (RX0–RX3) using the three-bit OFn2–OFn0 fields in the Frame Input Offset Register (FOR), enabling precise skew compensation across distributed switching systems.
Does the IDT72V70180PFG support both ST-BUS® and GCI frame formats?
Yes, the IDT72V70180PFG automatically detects and configures itself for either ST-BUS® or GCI framing based on the polarity and timing relationship of the F0i frame pulse and FE evaluation signal. In ST-BUS® mode, it samples data on the rising edge of CLK; in GCI mode, on the falling edge - no software or hardware configuration is required.
How does the IDT72V70180PFG handle microprocessor interface compatibility?
The IDT72V70180PFG supports both Intel-style (multiplexed AD0–AD7 with RD/WR) and Motorola-style (non-multiplexed A0–A7/D8–D15 with DS/RW) buses via the IM pin and configurable control signals (DS/RD, R/W/WR, AS/ALE). This eliminates glue logic and allows direct connection to diverse 8/16-bit microcontrollers and DSPs without interface translation.
What is the role of the ODE pin on the IDT72V70180PFG?
The ODE (Output Drive Enable) pin on the IDT72V70180PFG provides global control of the TX0–TX3 serial output drivers. When ODE is LOW, all TX outputs enter high-impedance state regardless of per-channel OE bits - a critical safety feature during power-up initialization or fault conditions. When HIGH, per-channel OE bits in connection memory determine individual output states.
Can the IDT72V70180PFG perform per-channel loopback for diagnostics?
Yes, the IDT72V70180PFG supports per-channel loopback via the LPBK bit in each 16-bit connection memory location. When LPBK = 1, TXn,m data is routed internally to RXn,m, enabling isolated channel-level functional verification without external test equipment or board-level wiring changes - essential for field-deployed telecom hardware validation.
72V70180PFG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 72V
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Multiplexer
- Circuit:
- 1 x 4:4
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-TQFP (14x14)
72V70180PFG FAQ
1.How can I place an order for 72V70180PFG through Aetrix?
Please submit a Request for Quotation (RFQ) for 72V70180PFG 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 72V70180PFG reliable?
The price and inventory of 72V70180PFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 72V70180PFG is usually 5 days.
3.What payment methods are accepted for 72V70180PFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 72V70180PFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 72V70180PFG?
72V70180PFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 72V70180PFG 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 72V70180PFG?
For technical support, including 72V70180PFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 72V70180PFG requirements.
6.How does Aetrix verify that 72V70180PFG is sourced from the original manufacturer or authorized distributors?
All 72V70180PFG 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 72V70180PFG meets industry standards.
7.What is the process for return or replacement of 72V70180PFG?
All 72V70180PFG units undergo pre-shipment inspection (PSI). If there is an issue with 72V70180PFG, 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 72V70180PFG part is unused and in its original packaging.
Return procedure for 72V70180PFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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