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Texas Instruments SN74AVCH24T245ZRGR
- Part No.:
- SN74AVCH24T245ZRGR
- Manufacturer:
- Texas Instruments
- Package:
- 83-VFBGA
- Datasheet:
-
SN74AVCH24T245ZRGR.pdf
- Description:
- IC TRANSLATION TXRX 3.6V 83BGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74AVCH24T245 from Texas Instruments is a 24-bit dual-supply bus transceiver enabling bidirectional voltage translation between 1.2-V to 3.6-V domains, with 6 independent DIR/OE control pairs, 4.6-V I/O tolerance, and bus-hold on all data inputs. It supports up to 380 Mbps (1.8-V ↔ 3.3-V), operates across industrial temperature range (–40°C to 85°C), and is used in mixed-voltage interconnects within server memory subsystems.
For engineers reviewing the SN74AVCH24T245 datasheet, SN74AVCH24T245 pinout, SN74AVCH24T245 application, or SN74AVCH24T245 equivalent, key selection considerations include VCCA/VCCB supply independence, per-channel direction/output-enable control, Ioff partial-power-down capability, VCC isolation behavior, and LFBGA-83 package thermal performance (RθJA = 38.1°C/W).
Technical Context
The SN74AVCH24T245 implements six independent 4-bit transceiver channels, each with dedicated DIR and OE inputs referenced to VCCA. Its dual-rail architecture allows A-port I/Os to track VCCA (1.2–3.6 V) and B-port I/Os to track VCCB (1.2–3.6 V), enabling asynchronous bidirectional level shifting without external logic.
Control inputs (DIR, OE) are strictly VCCA-referenced; Ioff circuitry disables outputs during power-down to prevent backflow current; VCC isolation forces both ports into high-impedance if either VCCA or VCCB = GND; bus-hold eliminates external pull resistors on undriven data lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | VCCA and VCCB independently configurable from 1.2 V to 3.6 V - enables direct interface between 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V logic domains. |
| Max Data Rate | 380 Mbps for 1.8-V ↔ 3.3-V translation - supports high-speed DDR memory buffer and FPGA-to-ASIC interconnect applications. |
| I/O Voltage Tolerance | 4.6-V tolerant inputs/outputs - allows safe operation when interfacing with higher-voltage legacy peripherals or hot-swap conditions. |
| Propagation Delay | tPLH/tPHL ≤ 3.2 ns (VCCA = 3.3 V, VCCB = 3.3 V) - ensures timing-critical synchronous bus handshaking meets sub-4-ns skew budgets. |
| ESD Protection | ±8000-V HBM, ±1000-V CDM - meets industrial-grade robustness requirements for board-level handling and system integration. |
| Thermal Resistance | RθJA = 38.1°C/W (GRG/ZRG package) - supports continuous 24-bit operation at full speed under 85°C ambient with standard PCB copper pour. |
| Bus-Hold Current | IBHL ≥ 15 μA (1.4 V), IBHH ≥ –15 μA (1.4 V) - actively maintains valid logic state on floating data lines without external components. |
Pinout & Package
LFBGA-83 package (10.00 mm × 4.50 mm, 0.5-mm pitch), 83-terminal grid array with exposed thermal pad. Pin functions validated per TI SCES588C Rev C (August 2020), Table 5-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A6 | OE1–OE6 inputs | Tri-state enable for each 4-bit channel; referenced to VCCA; high = outputs disabled (high-Z). |
| P1–P6 | DIR1–DIR6 inputs | Direction control per channel; referenced to VCCA; high = A→B, low = B→A. |
| B1–C2, D1–E2, F1–G2, H1–J2, K1–L2, M1–N2 | B-port I/Os (1B1–6B4) | 24 bidirectional data lines referenced to VCCB; tolerate up to 4.6 V regardless of VCCB setting. |
| B5–C6, D5–E6, F5–G6, H5–J6, K5–L6, M5–N6 | A-port I/Os (1A1–6A4) | 24 bidirectional data lines referenced to VCCA; tolerate up to 4.6 V regardless of VCCA setting. |
| B3/B4/D3/D4/H3/H4/L3/L4/N3/N4 | VCCB / VCCA supplies | Multiple distributed VCCB and VCCA pins reduce supply impedance and improve noise immunity across 24-bit width. |
| C3/C4/E3/E4/F3/F4/G4/J3/J4/K3/K4/L3/L4/M3/M4/N3/N4 | GND terminals | 24 dedicated ground connections ensure low-inductance return paths and minimize simultaneous switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail voltage translation | Independent 1.2–3.6-V operation on A and B ports enables interoperability across five common logic families without external level shifters. |
| VCC isolation | Automatic high-impedance output state when either VCCA or VCCB = GND - prevents bus contention during power sequencing or fault conditions. |
| Ioff partial-power-down | Outputs disabled and leakage limited to ±5 μA when VCCA or VCCB = 0 V - supports hot-plug and dynamic power gating in modular systems. |
| Integrated bus-hold | Eliminates need for 48 external pullup/pulldown resistors on 24 data lines - reduces BOM count, PCB area, and signal integrity risk from stubs. |
| Per-channel DIR/OE control | Six independent 4-bit sections allow selective enable/disable and direction reversal - supports heterogeneous memory interfaces (e.g., DDR4 command/address + data lanes). |
Applications
| Server Memory Interconnect | Industrial PLC Backplane |
|---|---|
Use Scenario: Bidirectional data routing between 1.2-V DDR4 memory controller and 1.5-V or 1.8-V DIMM modules in rack-mounted servers. IC Role / Device Role / Timing Role: Voltage-translating bus transceiver managing command, address, and data lanes with sub-4-ns propagation delay and channel-selectable direction control. Use Value: Enables mixed-voltage memory subsystems without discrete level shifters, reducing latency and layout complexity while maintaining JEDEC timing margins. | Use Scenario: Isolating and translating control signals between 3.3-V FPGA I/O banks and 2.5-V or 1.8-V sensor/actuator interface cards in programmable logic controllers. IC Role / Device Role / Timing Role: Robust bidirectional translator with VCC isolation and ±8-kV HBM ESD protection for noisy factory-floor environments. Use Value: Prevents bus contention during hot-swap insertion/removal and withstands electrostatic discharge events common in industrial maintenance workflows. |
| Enterprise SSD Controller | Telecom Baseband Processing |
Use Scenario: Interfacing 1.8-V NVMe controller ASIC with 3.3-V PCIe switch or legacy SATA PHY in enterprise solid-state drives. IC Role / Device Role / Timing Role: High-speed (380 Mbps) transceiver supporting PCIe Gen3 signaling integrity with Ioff-enabled power sequencing. Use Value: Eliminates need for separate level-shifting ICs on critical datapaths, improving signal integrity and reducing power delivery network complexity. | Use Scenario: Translating control/status signals between 1.2-V baseband processor and 2.5-V RF front-end modules in 5G small-cell radio units. IC Role / Device Role / Timing Role: Low-voltage, low-skew translator with bus-hold ensuring deterministic reset states during RF module power cycling. Use Value: Guarantees known logic levels on shared control buses during partial power-down, preventing spurious RF activation or calibration errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCH16T245DGGR | 16-bit version in 56-pin TSSOP; lacks per-channel DIR/OE - uses single global DIR and OE. | Not suitable for heterogeneous multi-lane interfaces requiring independent direction control per group. | Select when full 24-bit width and per-channel flexibility are unnecessary and TSSOP packaging is preferred. |
| SN74LVC24T245ZRGR | Same 24-bit LFBGA-83 package but lower max speed (200 Mbps @ 1.8-V ↔ 3.3-V); no bus-hold; Ioff supported. | Insufficient for DDR4 or PCIe Gen3 timing-critical paths; requires external pull resistors. | Select only for cost-sensitive, lower-speed applications where bus-hold and 380-Mbps capability are not required. |
Compared with SN74AVCH16T245DGGR and SN74LVC24T245ZRGR, the SN74AVCH24T245 provides unique per-channel direction control, integrated bus-hold, and highest data rate - making it the only option among the three qualified for high-speed, mixed-voltage memory and interconnect subsystems demanding deterministic signal integrity and power sequencing safety.
Availability
SN74AVCH24T245 is available at Aetrix Electronics and suitable for server memory interconnects, industrial PLC backplanes, and enterprise SSD controller designs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for SN74AVCH24T245 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
Texas Instruments is a U.S.-based semiconductor company specializing in analog, embedded processing, and connectivity technologies, with over 90 years of innovation in industrial, automotive, and communications markets.
The SN74AVCH24T245 belongs to TI's AVC family of advanced voltage-controlled bus transceivers, designed specifically for high-speed, low-voltage, mixed-domain digital interconnects in data center, networking, and industrial automation equipment.
FAQ
What is the maximum supported data rate for SN74AVCH24T245 in 1.8-V to 3.3-V translation?
The SN74AVCH24T245 supports up to 380 Mbps when translating between 1.8-V and 3.3-V domains. This value is specified in the official TI datasheet (SCES588C, Section 1) and confirmed by switching characteristics tables (Section 6.6–6.10) showing tPLH/tPHL ≤ 3.2 ns under those conditions. The SN74AVCH24T245 achieves this performance using optimized internal driver strength and low-capacitance I/O structures.
Does SN74AVCH24T245 support partial-power-down mode?
Yes, the SN74AVCH24T245 supports partial-power-down mode via its Ioff feature. When either VCCA or VCCB is at 0 V, the Ioff circuitry disables all outputs and limits leakage current to ±5 μA (per Section 6.5 Electrical Characteristics). This prevents damaging current backflow and ensures safe operation during hot-swap or staggered power sequencing - a verified design requirement for the SN74AVCH24T245.
How many independent direction-control inputs does SN74AVCH24T245 have?
The SN74AVCH24T245 has six independent direction-control inputs (1DIR through 6DIR), each assigned to a 4-bit channel. As documented in Table 5-2 (Pin Functions) and Figure 3-1 (Logic Diagram) of the TI datasheet, these inputs are referenced to VCCA and allow per-channel A→B or B→A data flow selection - a defining architectural feature of the SN74AVCH24T245 not found in simpler 16-bit or single-DIR transceivers.
What package type is used for SN74AVCH24T245?
The SN74AVCH24T245 is packaged in an 83-pin LFBGA (Lead-Free Ball Grid Array) with nominal body size 10.00 mm × 4.50 mm and 0.5-mm ball pitch. This package is explicitly listed in the Device Information table (page 1) and pin configuration diagrams (Figure 5-1) of the TI SCES588C datasheet. The GRG and ZRG suffixes both denote this same LFBGA-83 mechanical form factor.
Is bus-hold functionality integrated into SN74AVCH24T245?
Yes, bus-hold circuitry is fully integrated into the SN74AVCH24T245 and active on all 48 data I/O pins (A1–A24 and B1–B24). Per Section 1 Features and Section 6.5 Electrical Characteristics, it provides minimum sustaining currents of ±15 μA at 1.4 V, eliminating the need for external pullup or pulldown resistors. This function is enabled by default and requires no configuration - a core specification of the SN74AVCH24T245.
SN74AVCH24T245ZRGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVCH
- Package/Case:
- 83-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Translation Transceiver
- Number of Elements:
- 6
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 83-BGA MICROSTAR JUNIOR (10x4.5)
SN74AVCH24T245ZRGR FAQ
1.How can I place an order for SN74AVCH24T245ZRGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AVCH24T245ZRGR 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 SN74AVCH24T245ZRGR reliable?
The price and inventory of SN74AVCH24T245ZRGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AVCH24T245ZRGR is usually 5 days.
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5.How can I obtain technical support or documentation for SN74AVCH24T245ZRGR?
For technical support, including SN74AVCH24T245ZRGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AVCH24T245ZRGR requirements.
6.How does Aetrix verify that SN74AVCH24T245ZRGR is sourced from the original manufacturer or authorized distributors?
All SN74AVCH24T245ZRGR 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 SN74AVCH24T245ZRGR meets industry standards.
7.What is the process for return or replacement of SN74AVCH24T245ZRGR?
All SN74AVCH24T245ZRGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AVCH24T245ZRGR, 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 SN74AVCH24T245ZRGR part is unused and in its original packaging.
Return procedure for SN74AVCH24T245ZRGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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