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Nexperia USA Inc. 74AVCH4T245D,118
- Part No.:
- 74AVCH4T245D,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74AVCH4T245D,118.pdf
- Description:
- IC TRANSLATION TXRX 3.6V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,270
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Product details
Overview
74AVCH4T245D,118 from Nexperia is a 4-bit dual-supply translating transceiver enabling bidirectional level translation between independent voltage domains (0.8 V to 3.6 V). It operates as two 2-bit or one 4-bit transceiver with direction control (nDIR), output enable (nOE), and active bus hold on all I/O pins. Used in mixed-voltage SoC interconnects, FPGA I/O bridging, and DDR memory interface voltage adaptation.
For engineers reviewing the 74AVCH4T245D,118 datasheet, 74AVCH4T245D,118 pinout, 74AVCH4T245D,118 application, or 74AVCH4T245D,118 equivalent, key selection criteria include configurable VCC(A)/VCC(B) supply independence, IOFF-enabled partial power-down, suspend-mode high-impedance isolation, and guaranteed 380 Mbit/s data rate for ≥1.8 V ↔ 3.3 V translation.
Technical Context
The device implements dual-rail CMOS logic with separate input-reference domains: nAn/nDIR/nOE referenced to VCC(A), nBn referenced to VCC(B). Direction control is synchronous and non-latched - transmission path is determined solely by nDIR state at data transition time.
IOFF circuitry activates when either VCC(A) or VCC(B) = 0 V, forcing both A- and B-side outputs into high-impedance OFF-state while maintaining bus hold on the powered side. Bus hold strength scales with supply voltage (e.g., ±100 μA at 3.0 V, ±25 μA at 1.65 V).
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 across 0.8/1.2/1.5/1.8/2.5/3.3 V nodes without external level shifters |
| Max Data Rate | 380 Mbit/s - achievable only for ≥1.8 V ↔ 3.3 V translation; drops to 100 Mbit/s for 1.1 V ↔ 1.2 V |
| Propagation Delay | nAn→nBn: 2.9 ns min / 9.1 ns max (VCC(A)=3.3 V, VCC(B)=3.3 V, -40°C to +125°C) - determines minimum clock period in synchronous interfaces |
| Bus Hold Current | ±100 μA at 3.0 V - eliminates need for external pull-up/down resistors on floating I/O lines |
| IOFF Leakage | ±5 μA max per port at 3.6 V - ensures safe backflow prevention during partial power-down |
| ESD Rating | HBM >8000 V, CDM >1000 V - meets industrial-grade robustness requirements without additional protection circuitry |
| Operating Temp | -40 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and telecom infrastructure applications |
Pinout & Package
74AVCH4T245D,118 uses SO16 (SOT109-1) package: plastic small outline, 16-pin, 3.9 mm body width, standard gull-wing leads.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC(A) | Supply for A-side inputs (nAn, nDIR, nOE); defines logic thresholds for A-port control signals |
| 2,3 | 1DIR, 2DIR | Direction control inputs - HIGH enables A→B, LOW enables B→A; referenced to VCC(A) |
| 4–7 | 1A1,1A2,2A1,2A2 | A-side bidirectional data terminals - connect to lower-voltage domain (e.g., 1.2 V processor I/O) |
| 8,9 | GND | Common ground reference for both supply domains; both pins must be connected |
| 10–13 | 2B2,2B1,1B2,1B1 | B-side bidirectional data terminals - connect to higher-voltage domain (e.g., 3.3 V peripheral bus) |
| 14,15 | 2OE, 1OE | Active-low output enable - disables both A- and B-side drivers simultaneously; referenced to VCC(A) |
| 16 | VCC(B) | Supply for B-side inputs (nBn); defines logic thresholds for B-port data signals |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply rails | VCC(A) and VCC(B) operate independently from 0.8 V to 3.6 V - supports heterogeneous voltage domain interconnect without level-shifter ICs |
| IOFF partial power-down | Automatically disables outputs and blocks backflow current when either VCC is at GND - essential for hot-swap and sleep-mode system design |
| Active bus hold | Internal weak pull-up/pull-down holds unused I/O at valid logic level - removes need for 10 kΩ external resistors and saves PCB space |
| Suspend mode operation | Both A- and B-side outputs enter high-Z when either VCC = 0 V, while bus hold remains active on powered side - prevents floating-bus contention |
| JEDEC compliance | Meets JESD8-12 through JESD8-B standards - ensures interoperability with industry-standard low-voltage logic families |
Applications
| Processor-to-Peripheral Bridge | FPGA I/O Voltage Adaptation |
|---|---|
|
Use Scenario: Interfacing a 1.2 V ARM Cortex-M7 microcontroller with a 3.3 V UART transceiver and SPI ADC. IC Role / Device Role / Timing Role: Bidirectional level translator handling control (nDIR/nOE) and data (A/B ports) with sub-10 ns propagation delay. Use Value: Eliminates discrete MOSFET-based level shifters; IOFF prevents backfeed during MCU reset; bus hold avoids floating states during SPI chip select assertion. |
Use Scenario: Adapting 1.8 V FPGA bank I/O to 2.5 V Ethernet PHY and 3.3 V SD card interface. IC Role / Device Role / Timing Role: Configurable 4-bit transceiver partitioned as two 2-bit channels, each with independent direction control. Use Value: Single-package solution replaces multiple discrete translators; 380 Mbit/s rate supports 100 Mbps Ethernet MAC timing margins; suspend mode isolates PHY during FPGA configuration. |
| DDR Memory Interface Buffer | Industrial Sensor Hub Interface |
|
Use Scenario: Isolating 1.5 V DDR3 SDRAM data bus from 3.3 V system management controller during memory self-refresh. IC Role / Device Role / Timing Role: 4-bit transceiver operating in A→B direction during read/write, disabled via nOE during self-refresh. Use Value: IOFF blocks current flow from 3.3 V controller to 1.5 V DDR VDDQ during power-down; bus hold maintains stable DQS termination state. |
Use Scenario: Aggregating 0.8 V MEMS sensor outputs and 1.8 V analog front-end signals to a 3.3 V microcontroller ADC input multiplexer. IC Role / Device Role / Timing Role: Level-translating transceiver with direction control synchronized to sensor sampling trigger. Use Value: Supports ultra-low-voltage sensor operation without signal degradation; ±100 μA bus hold prevents false triggers on unconnected sensor channels. |
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 |
|---|---|---|---|
| Texas Instruments SN74AVCH4T245PW | Same logic function and pinout; TSSOP16 package (SOT403-1); 0.65 mm lead pitch vs SO16's 1.27 mm | Higher board density but requires finer-pitch reflow profile; identical electrical specs and temperature range | Select for space-constrained layouts where SO16 footprint is prohibitive |
| ON Semiconductor NTB0102DT | 2-bit dual-supply translator; no direction control - auto-sensing based on voltage differential; different pinout and control scheme | Limited to 2-bit applications; unsuitable for bidirectional protocols requiring explicit DIR signaling (e.g., SPI, parallel buses) | Select only for simple uni-directional or auto-direction I²C/SMBus applications where DIR pin is unnecessary |
Compared with SN74AVCH4T245PW, the 74AVCH4T245D,118 offers identical functionality in a more manufacturable SO16 package; versus NTB0102DT, it provides deterministic direction control and full 4-bit bandwidth required for parallel data buses and FPGA I/O expansion.
Availability
74AVCH4T245D,118 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive ADAS domain controllers, and 5G base station RF front-end modules requiring stable component supply across extended temperature ranges.
Supply support for 74AVCH4T245D,118 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 high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74AVCH4T245 belongs to Nexperia's Advanced Very Low-Voltage CMOS (AVC) logic family, engineered specifically for mixed-voltage system interconnects in power-sensitive, thermally demanding environments.
FAQ
Can 74AVCH4T245D,118 translate between 0.8 V and 3.6 V simultaneously?
Yes - VCC(A) and VCC(B) may be set independently within 0.8 V to 3.6 V. When VCC(A) = 0.8 V and VCC(B) = 3.6 V, the device translates signals bidirectionally with guaranteed timing (tpd ≤ 9.1 ns max at -40°C to +125°C) and IOFF protection if either rail powers down.
What happens to bus hold behavior when one supply is at 0 V?
In suspend mode (VCC(A) = 0 V or VCC(B) = 0 V), bus hold remains active only on the powered side. For example, if VCC(A) = 0 V and VCC(B) = 3.3 V, bus hold functions on B-side pins (1B1–2B2) but is inactive on A-side pins, which float in high-impedance state.
Is the 74AVCH4T245D,118 pin-compatible with older 74LVC4T245 variants?
No - although both are 4-bit translators, 74AVCH4T245D,118 uses different pin mapping: nDIR/nOE are on pins 2–3/14–15, whereas 74LVC4T245 places DIR on pin 1 and OE on pin 16. Electrical compatibility does not imply mechanical or layout compatibility.
Does the device support hot insertion when VCC(B) is powered before VCC(A)?
Yes - IOFF circuitry activates immediately upon detection of VCC(A) = 0 V while VCC(B) is active, placing A-side outputs in high-impedance and blocking backflow current. This allows safe hot-plug of 3.3 V peripherals into a powered 1.2 V host system.
74AVCH4T245D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AVCH
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Translation Transceiver
- Number of Elements:
- 2
- Number of Bits per Element:
- 2
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 0.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74AVCH4T245D,118 FAQ
1.How can I place an order for 74AVCH4T245D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AVCH4T245D,118 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 74AVCH4T245D,118 reliable?
The price and inventory of 74AVCH4T245D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVCH4T245D,118 is usually 5 days.
3.What payment methods are accepted for 74AVCH4T245D,118?
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4.How is shipping managed for 74AVCH4T245D,118?
74AVCH4T245D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AVCH4T245D,118 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 74AVCH4T245D,118?
For technical support, including 74AVCH4T245D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVCH4T245D,118 requirements.
6.How does Aetrix verify that 74AVCH4T245D,118 is sourced from the original manufacturer or authorized distributors?
All 74AVCH4T245D,118 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 74AVCH4T245D,118 meets industry standards.
7.What is the process for return or replacement of 74AVCH4T245D,118?
All 74AVCH4T245D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AVCH4T245D,118, 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 74AVCH4T245D,118 part is unused and in its original packaging.
Return procedure for 74AVCH4T245D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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