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NXP Semiconductors 74AVCH1T45GS,132
- Part No.:
- 74AVCH1T45GS,132
- Manufacturer:
- NXP Semiconductors
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74AVCH1T45GS,132.pdf
- Description:
- NEXPERIA 74AVCH1T45GS - BUS DRIV
- Quantity:
- Payment:
- Shipping:
Inventory:68,000
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Product details
Overview
74AVCH1T45GS,132 from Nexperia is a single-bit dual-supply voltage level translator/transceiver enabling bidirectional logic-level translation between 0.8 V and 3.6 V domains. It features active bus hold on data inputs, IOFF partial power-down protection, and operates across -40 °C to +125 °C. Used in mixed-voltage I/O bridging between microcontrollers and peripherals such as sensors or memory in portable and industrial embedded systems.
For engineers reviewing the 74AVCH1T45GS,132 datasheet, 74AVCH1T45GS,132 pinout, 74AVCH1T45GS,132 application, or 74AVCH1T45GS,132 equivalent, key selection criteria include dual-rail supply flexibility (VCC(A)/VCC(B) independent), 3-state control via DIR, bus hold elimination of external resistors, IOFF current blocking during power-down, and verified 500 Mbit/s throughput at 1.8 V → 3.3 V translation.
Technical Context
This device implements a direction-controlled bidirectional transceiver architecture with separate VCC(A) and VCC(B) supplies referenced to a common GND. The DIR input-tied to VCC(A)-controls signal flow: low enables B→A translation, high enables A→B translation. Bus hold circuitry actively maintains valid logic states on floating A/B pins without external components.
IOFF functionality disables outputs and blocks backflow current when either VCC(A) or VCC(B) is at GND, supporting hot-insertion and partial power-down modes. Suspend mode activates automatically if either supply drops to GND, placing both ports in high-impedance state while preserving bus hold behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 0.8 V to 3.6 V per rail (VCC(A) and VCC(B) independently configurable) |
| Max Data Rate | 500 Mbit/s (1.8 V → 3.3 V translation); supports high-speed interconnects |
| Propagation Delay | As low as 2.4 ns (VCC(A)=3.3 V, VCC(B)=3.3 V, A→B path, -40 °C to +125 °C) |
| Bus Hold Current | ±24 μA typical (IBHH/IBHL at 1.2 V), eliminates need for pull-up/down resistors |
| IOFF Leakage | ±5 μA max (VCC = 0 V, other rail at 0.8–3.6 V), prevents damaging backflow during power sequencing |
| ESD Protection | HBM >8 kV, CDM >1 kV - robust handling in automated assembly and field environments |
| Operating Temp | -40 °C to +125 °C - qualified for automotive under-hood and industrial control applications |
Pinout & Package
XSON6 package (SOT1202): 1.0 mm × 1.0 mm × 0.35 mm body, no leads, 6-terminal exposed pad design optimized for space-constrained PCB layouts and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC(A) | Supply rail A and DIR reference | Power source for port A and logic reference for DIR input; must be stable before DIR assertion |
| GND | Common ground reference | Single shared ground for both supply domains; mandatory first-connection during power-up |
| A | Bidirectional I/O port A | Connects to lower-voltage domain (e.g., 1.2 V MCU I/O); bus hold active when floating |
| B | Bidirectional I/O port B | Connects to higher-voltage domain (e.g., 3.3 V sensor interface); bus hold active when floating |
| DIR | Direction control input | Logic level referenced to VCC(A); LOW = B→A, HIGH = A→B; no internal pull-up/pull-down |
| VCC(B) | Supply rail B | Independent power source for port B; enables true dual-voltage operation without level-shifting ICs |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply translation | Independent VCC(A) and VCC(B) rails (0.8–3.6 V each) enable seamless interfacing between disparate logic families |
| Active bus hold | Eliminates external pull resistors on A/B pins, reducing BOM count and board area in high-density designs |
| IOFF partial power-down | Blocks current flow when either supply is off, preventing backfeed damage during system sleep or hot-swap events |
| Suspend mode | Automatic high-Z state when VCC(A) = GND or VCC(B) = GND - simplifies power sequencing in multi-rail systems |
| JEDEC compliance | Fully compliant with JESD8-12 through JESD8C standards across all supported voltage ranges |
Applications
| Microcontroller I/O Bridging | Sensor Interface Translation |
|---|---|
Use Scenario: Connecting a 1.2 V ARM Cortex-M0+ GPIO bank to a 3.3 V analog front-end ASIC. IC Role / Device Role / Timing Role: Bidirectional level translator managing data and control signals with sub-3 ns propagation delay and automatic bus hold stabilization. Use Value: Removes need for discrete resistor networks and ensures deterministic logic states during MCU reset or deep-sleep transitions. | Use Scenario: Interfacing a 1.8 V IoT SoC to a 2.5 V MEMS accelerometer with open-drain interrupt output. IC Role / Device Role / Timing Role: Unidirectional level shifter (DIR = HIGH) translating INT# signal while maintaining noise immunity and fast edge rates. Use Value: Supports 320 Mbit/s translation speed and <10% overshoot/undershoot, ensuring reliable interrupt timing in real-time motion sensing. |
| Memory Subsystem Isolation | Industrial PLC Backplane Interface |
Use Scenario: Isolating a 3.3 V FPGA configuration interface from a 1.5 V DDR3L memory controller. IC Role / Device Role / Timing Role: Direction-controlled transceiver enabling bidirectional data transfer with precise enable/disable timing (ten ≤ 15.2 ns). Use Value: IOFF protection prevents FPGA configuration corruption during memory power cycling or hot-plug maintenance. | Use Scenario: Level-shifting between a 2.3 V industrial microcontroller and legacy 5 V RS-485 transceiver logic inputs. IC Role / Device Role / Timing Role: Robust translator operating at -40 °C to +125 °C with overvoltage-tolerant inputs (up to 3.6 V). Use Value: Eliminates external clamping diodes and sustains >100 mA latch-up immunity per JESD78 Class II, meeting EN 61000-6-2 surge requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0101DGSR | Auto-direction sensing (no DIR pin); higher ICC in active mode (≈30 μA vs. 24 μA typ) | Requires no direction control logic but less predictable timing in bidirectional burst transfers | Select when system lacks dedicated DIR signal routing and tolerates slightly higher static current |
| SN74AVC1T45DBVR | Same pinout and function but rated only to +85 °C; IOFF leakage higher (±35 μA max) | Not qualified for extended temperature industrial or automotive under-hood use | Select only for commercial-grade applications where cost is prioritized over thermal margin |
Compared with TXB0101DGSR and SN74AVC1T45DBVR, the 74AVCH1T45GS,132 provides superior thermal qualification (-40 °C to +125 °C), tighter IOFF leakage control, and deterministic DIR-based direction switching essential for synchronous protocol bridging.
Availability
74AVCH1T45GS,132 is available at Aetrix Electronics and suitable for microcontroller I/O bridging, sensor interface translation, memory subsystem isolation, and industrial PLC backplane interface requiring stable component supply across extended temperature ranges.
Supply support for 74AVCH1T45GS,132 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 delivering high-performance, reliable, and efficient logic, discrete, and MOSFET solutions with focus on automotive, industrial, and mobile markets.
The 74AVCH1T45 belongs to Nexperia's advanced voltage translator product line, engineered specifically for ultra-low-power, space-constrained mixed-voltage system integration with emphasis on robustness, JEDEC compliance, and extended temperature operation.
FAQ
What is the minimum recommended supply voltage for reliable bus hold operation?
Bus hold remains functional down to VCC(A) = VCC(B) = 0.8 V, with IBHL/IBHH currents specified at 1.2 V and scalable per JEDEC standards. At 0.8 V, typical sustaining current is ±26 μA (low) and ±24 μA (high), sufficient to maintain logic states against typical PCB leakage and noise coupling in battery-powered systems.
Can VCC(A) and VCC(B) be powered from different regulators with independent ramp rates?
Yes - the device requires only that GND be established first. No specific power-up sequence between VCC(A) and VCC(B) is mandated. IOFF and suspend mode ensure safe operation even if one rail powers up significantly before the other, making it suitable for systems with staggered power domains.
How does the DIR pin behave when VCC(A) is unpowered?
When VCC(A) = 0 V, the DIR input is invalid and the device enters suspend mode: both A and B ports go high-impedance, but bus hold remains active to retain last-valid logic state. DIR has no internal pull-up or pull-down, so external biasing is required only if DIR must be asserted before VCC(A) stabilizes.
Is the 74AVCH1T45GS,132 compatible with 5 V tolerant interfaces?
No - inputs are overvoltage tolerant up to 3.6 V only. Direct connection to 5 V signals violates absolute maximum ratings and risks permanent damage. For 5 V interface translation, an additional clamping stage or a 5 V–tolerant translator such as the 74LVC1T45 must be used upstream.
74AVCH1T45GS,132 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- Packaging:
- Bulk
- Product Status:
- Active
- Translator Type:
- -
- Channel Type:
- -
- Number of Circuits:
- -
- Channels per Circuit:
- -
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- -
- Data Rate:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74AVCH1T45GS,132 FAQ
1.How can I place an order for 74AVCH1T45GS,132 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AVCH1T45GS,132 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 74AVCH1T45GS,132 reliable?
The price and inventory of 74AVCH1T45GS,132 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVCH1T45GS,132 is usually 5 days.
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5.How can I obtain technical support or documentation for 74AVCH1T45GS,132?
For technical support, including 74AVCH1T45GS,132 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVCH1T45GS,132 requirements.
6.How does Aetrix verify that 74AVCH1T45GS,132 is sourced from the original manufacturer or authorized distributors?
All 74AVCH1T45GS,132 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 74AVCH1T45GS,132 meets industry standards.
7.What is the process for return or replacement of 74AVCH1T45GS,132?
All 74AVCH1T45GS,132 units undergo pre-shipment inspection (PSI). If there is an issue with 74AVCH1T45GS,132, 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 74AVCH1T45GS,132 part is unused and in its original packaging.
Return procedure for 74AVCH1T45GS,132:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AVCH1T45GS,132 Tags
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74LVC1T45GW,125
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SN74LVC1T45DBVR
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SN74LVC2T45DCTR
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SN74LVC1T45YZPR
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