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Nexperia USA Inc. 74AVCH20T245DGG,11
- Part No.:
- 74AVCH20T245DGG,11
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74AVCH20T245DGG,11.pdf
- Description:
- IC TRANSLATOR BIDIR 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,415
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Product details
Overview
74AVCH20T245DGG,11 from Nexperia is a 20-bit dual-supply translating transceiver enabling bidirectional voltage level translation between independent 0.8 V–3.6 V domains (e.g., 1.2 V ↔ 3.3 V). It supports two 10-bit or one 20-bit configuration, features active bus hold on all I/Os, IOFF partial power-down protection, and operates across –40 °C to +125 °C. Used in mixed-voltage SoC interconnects, FPGA I/O bridging, and DDR memory subsystems.
For engineers reviewing the 74AVCH20T245DGG,11 datasheet, 74AVCH20T245DGG,11 pinout, 74AVCH20T245DGG,11 application, or 74AVCH20T245DGG,11 equivalent, key selection criteria include dual-rail supply independence, suspend-mode high-impedance behavior when either VCC is grounded, bus hold current specs at 1.2 V/1.65 V/2.3 V, propagation delay asymmetry (A→B vs B→A), and TSSOP56 thermal derating above 109 °C.
Technical Context
This transceiver implements two independent 10-bit bidirectional data paths (1A/1B and 2A/2B), each with dedicated direction (nDIR) and output enable (nOE) controls referenced to VCC(A). The A-side ports (1An, 2An, nDIR, nOE) are powered by and referenced to VCC(A); B-side ports (1Bn, 2Bn) to VCC(B). Direction control is asynchronous: HIGH on 1DIR enables 1An→1Bn flow; LOW enables reverse.
IOFF circuitry disables outputs and blocks backflow current during partial power-down (e.g., VCC(A) = 0 V, VCC(B) = 3.3 V), while suspend mode forces all outputs to high-impedance when either supply drops to GND. Bus hold maintains valid logic levels on floating inputs without external resistors-IBHL ≥ 15 μA at 1.4 V, IBHH ≥ –15 μA at same voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply range | VCC(A): 0.8 V–3.6 V; VCC(B): 0.8 V–3.6 V - enables translation between any low-voltage nodes (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V) |
| Max data rate | 380 Mbit/s (≥1.8 V ↔ 3.3 V) - supports high-speed interface bridging like PCIe Gen1 sideband or MIPI D-PHY auxiliary lanes |
| Propagation delay | nAn→nBn: 2.9–5.7 ns (VCC(A)=3.3 V, VCC(B)=1.8–3.3 V); nBn→nAn: 2.9–5.1 ns - asymmetric timing requires direction-aware timing closure |
| Bus hold current | IBHL ≥ 15 μA @ 1.4 V; IBHH ≥ –15 μA @ 1.4 V - eliminates need for external pull resistors on unused I/Os in space-constrained PCBs |
| IOFF leakage | ±5 μA max (VCC(A)=0 V, VCC(B)=3.6 V) - prevents damaging back-current during hot-swap or staggered power sequencing |
| Operating temp | –40 °C to +125 °C - qualified for automotive under-hood and industrial motor drive control applications |
| ESD rating | HBM > 8000 V, CDM > 1000 V - robust handling in automated assembly and field-replaceable module environments |
Pinout & Package
TSSOP56 package (SOT364-1), 6.1 mm body width, 0.5 mm pitch, thermally enhanced for 500 mW total power dissipation (derates 12.2 mW/K above 109 °C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28 | 1DIR, 2DIR | Asynchronous direction control inputs referenced to VCC(A); HIGH enables A→B data flow per channel |
| 56, 29 | 1OE, 2OE | Active-LOW output enable; drives all associated I/Os to high-impedance when asserted |
| 2–14, 15–27 | 1B1–1B10, 2B1–2B10 | B-side bidirectional data ports referenced to VCC(B); tolerate up to 3.6 V input regardless of VCC(B) |
| 43–55, 30–42 | 1A1–1A10, 2A1–2A10 | A-side bidirectional data ports referenced to VCC(A); tolerate up to 3.6 V input regardless of VCC(A) |
| 4, 11, 18, 25, 32, 39, 46, 53 | GND | Eight dedicated ground pins - mandatory connection to 0 V for noise immunity and thermal conduction |
| 7, 22, 35, 50 | VCC(B), VCC(A) | Four supply pins: two for VCC(B) (pins 7, 22), two for VCC(A) (pins 35, 50) - decoupling required per supply pair |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply rails | VCC(A) and VCC(B) operate independently from 0.8 V to 3.6 V - enables direct interfacing between disparate voltage domains without level-shifter ICs |
| Active bus hold | Eliminates external pull-up/pull-down resistors on all 20 I/Os - reduces BOM count and PCB area in dense FPGA/ASIC designs |
| IOFF partial power-down | Blocks backflow current when either supply is off - critical for hot-plug systems and power-gated subsystems |
| Suspend mode | All outputs go high-impedance if VCC(A) = 0 V or VCC(B) = 0 V - prevents bus contention during power sequencing faults |
| JEDEC compliance | Meets JESD8-12 (0.8–1.3 V), JESD8-11 (0.9–1.65 V), JESD8-7 (1.2–1.95 V), JESD8-5 (1.8–2.7 V), JESD8-B (2.7–3.6 V) - ensures interoperability across industry-standard voltage nodes |
Applications
| SoC-to-FPGA Interconnect | DDR Memory Subsystem Bridging |
|---|---|
|
Use Scenario: Connecting a 1.2 V ARM-based SoC to a 1.8 V FPGA I/O bank where voltage domains must be isolated but signals routed bidirectionally. IC Role / Device Role / Timing Role: Translates control/address/data lines between mismatched voltage rails while maintaining sub-6 ns propagation delay and direction-controlled flow. Use Value: Eliminates discrete level shifters and reduces signal integrity risk from added capacitance or skew in multi-chip interfaces. |
Use Scenario: Isolating DDR3 command/address bus (1.5 V) from a 3.3 V system management controller during initialization and calibration sequences. IC Role / Device Role / Timing Role: Provides 3-state isolation and voltage translation for CA bus lines, with suspend-mode safety when DDR supply ramps late. Use Value: Prevents bus contention during power sequencing mismatches and avoids need for external isolation switches or optocouplers. |
| Automotive ADAS Sensor Hub | Industrial PLC I/O Expansion |
|
Use Scenario: Interfacing a 1.8 V image sensor processor with a 3.3 V CAN/FlexRay communication controller in an ADAS domain controller. IC Role / Device Role / Timing Role: Bidirectional translation of parallel pixel metadata and control signals, operating reliably at –40 °C to +125 °C. Use Value: Enables single-package voltage bridging in thermally constrained enclosures without derating concerns up to 125 °C ambient. |
Use Scenario: Extending digital I/O from a 2.5 V microcontroller to legacy 5 V industrial sensors and actuators via discrete logic-level translation. IC Role / Device Role / Timing Role: Serves as configurable 20-bit translator with bus hold to stabilize floating inputs on unterminated field wiring. Use Value: Reduces EMI susceptibility from floating nodes and removes need for 20 individual pull resistors in DIN-rail mounted controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply translating transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCH20T245RHLR | QFN56 package (6 × 6 mm), no exposed pad; slightly higher ICC at 3.3 V (270 μA vs 190 μA) | Better thermal performance in high-density layouts; lacks TSSOP's mechanical stability for wave-soldered industrial boards | Select for space-constrained PCBs requiring lower profile; verify reflow profile compatibility with QFN |
| TXS0202DCUR | 2-bit, auto-direction sensing; no DIR/OE pins; max 3.6 V → 1.2 V only; no bus hold | Only suitable for point-to-point, low-pin-count, unidirectional-leaning links; not scalable to 20-bit buses | Choose only for simple 2-signal bridges where direction detection suffices and bus hold is unnecessary |
Compared with SN74AVCH20T245RHLR, the 74AVCH20T245DGG,11 offers superior mechanical reliability in through-hole-reflow hybrid assemblies and lower leakage in suspend mode; versus TXS0202DCUR, it delivers deterministic direction control, full 20-bit scalability, and bus hold-critical for multipoint bus topologies.
Availability
74AVCH20T245DGG,11 is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, industrial PLC I/O expansion modules, and DDR memory subsystem bridging requiring stable component supply across extended temperature ranges.
Supply support for 74AVCH20T245DGG,11 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
Nexperia is a global semiconductor expert focused on essential efficiency-enhancing components including logic, discrete, and MOSFET devices, serving automotive, industrial, and consumer markets.
The 74AVCH20T245 belongs to Nexperia's advanced voltage-translating logic family, designed specifically for reliable, high-speed interconnection between heterogeneous voltage domains in safety-critical and thermally demanding systems.
FAQ
What is the maximum allowable voltage difference between VCC(A) and VCC(B)?
No maximum differential is specified-the device supports any combination within 0.8 V–3.6 V per rail, including 0.8 V ↔ 3.3 V (2.5 V difference). Absolute maximum ratings allow VCC(A) and VCC(B) to reach +4.6 V independently, but operation outside 0.8 V–3.6 V voids functional guarantees and may damage internal clamping structures.
Does bus hold remain active when one supply is powered down?
Yes-bus hold remains active on the powered-up side only. If VCC(A) = 3.3 V and VCC(B) = 0 V, bus hold functions on all 1An/2An/1DIR/1OE/2DIR/2OE pins; B-side pins enter high-impedance with no hold. This prevents floating inputs on live domains while isolating inactive ones.
Can 74AVCH20T245DGG,11 translate between 0.8 V and 5 V logic?
No-it accepts inputs up to 3.6 V but does not drive outputs beyond its VCC(A) or VCC(B) rails. Driving 5 V loads requires external buffer stages or a different translator family (e.g., TXB series with open-drain + pull-up). Its 0.8 V–3.6 V range covers all JEDEC low-voltage standards but excludes 5 V TTL/CMOS.
How does IOFF behave during power sequencing where VCC(A) ramps before VCC(B)?
IOFF activates when either VCC falls below ~0.2 V-so if VCC(A) ramps first while VCC(B) remains at 0 V, the A-side outputs are disabled and leakage stays ≤ ±5 μA. This prevents back-driving the unpowered B-side bus, satisfying IEC 61000-4-2 system-level ESD robustness requirements during cold-start sequences.
74AVCH20T245DGG,11 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AVCH
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Translation Transceiver
- Number of Elements:
- 2
- Number of Bits per Element:
- 10
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 0.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
74AVCH20T245DGG,11 FAQ
1.How can I place an order for 74AVCH20T245DGG,11 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AVCH20T245DGG,11 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 74AVCH20T245DGG,11 reliable?
The price and inventory of 74AVCH20T245DGG,11 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVCH20T245DGG,11 is usually 5 days.
3.What payment methods are accepted for 74AVCH20T245DGG,11?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AVCH20T245DGG,11 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AVCH20T245DGG,11?
74AVCH20T245DGG,11 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AVCH20T245DGG,11 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 74AVCH20T245DGG,11?
For technical support, including 74AVCH20T245DGG,11 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVCH20T245DGG,11 requirements.
6.How does Aetrix verify that 74AVCH20T245DGG,11 is sourced from the original manufacturer or authorized distributors?
All 74AVCH20T245DGG,11 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 74AVCH20T245DGG,11 meets industry standards.
7.What is the process for return or replacement of 74AVCH20T245DGG,11?
All 74AVCH20T245DGG,11 units undergo pre-shipment inspection (PSI). If there is an issue with 74AVCH20T245DGG,11, 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 74AVCH20T245DGG,11 part is unused and in its original packaging.
Return procedure for 74AVCH20T245DGG,11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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