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Nexperia USA Inc. 74LVCH16245AEV,551
- Part No.:
- 74LVCH16245AEV,551
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 56-VFBGA
- Datasheet:
-
74LVCH16245AEV,551.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56VFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,462
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Product details
Overview
74LVCH16245AEV,551 from Nexperia is a 16-bit 3-state bus transceiver with dual direction control (1DIR/2DIR) and dual output enables (1OE/2OE), operating from 1.2 V to 3.6 V supply while tolerating 5.5 V inputs. It supports bidirectional data flow across two independent 8-bit ports or as a unified 16-bit path, features bus hold on all data inputs to eliminate external pull-ups, and includes IOFF circuitry for partial power-down protection in mixed-voltage systems. Used in FPGA-to-ASIC interconnects, memory expansion buses, and industrial PLC backplanes.
For engineers reviewing the 74LVCH16245AEV,551 datasheet, 74LVCH16245AEV,551 pinout, 74LVCH16245AEV,551 application, or 74LVCH16245AEV,551 equivalent, this page delivers verified electrical specs, TSSOP48 pin mapping, bus hold behavior, IOFF leakage values, propagation delay at 3.3 V (2.4 ns typ), and real-world use cases in voltage-translating data paths between 3.3 V and 5 V domains.
Technical Context
This device implements a dual 8-bit flow-through architecture with separate DIR/OE controls per port, enabling independent direction and enable management for each byte lane. Schmitt-trigger inputs ensure robust noise immunity against slow-rising signals, and the bus hold circuit sustains logic states on unused data pins without external biasing.
The IOFF feature actively disables outputs when VCC = 0 V, limiting backflow current to ±10 μA max, making it suitable for hot-swap and power-gated subsystems. Input voltage tolerance up to 5.5 V allows direct interfacing with legacy 5 V TTL logic while powered from 1.2–3.6 V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables operation in ultra-low-power microcontroller I/O domains and battery-powered interfaces. |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe connection to 5 V logic without level shifters in mixed-voltage bus architectures. |
| Propagation Delay (tpd) | 2.4 ns typical at VCC = 3.3 V - Supports high-speed data transfer in DDR memory buffers and FPGA configuration links. |
| Bus Hold Current (IBHL/IBHH) | ±75 μA at VCC = 3.0 V - Maintains stable logic levels on floating data lines, eliminating need for 10 kΩ pull-up/down resistors. |
| IOFF Leakage Current | ±10 μA max at VCC = 0 V - Prevents damaging backfeed current during partial power-down in modular system designs. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive ECUs, industrial motor drives, and telecom base station modules. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Ensures robust handling during PCB assembly and field service in factory automation equipment. |
Pinout & Package
TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, body width 6.1 mm, lead pitch 0.5 mm, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (active HIGH) | Determines data flow direction per 8-bit port: HIGH = A→B, LOW = B→A; enables independent byte-lane routing. |
| 1OE, 2OE | Output enable input (active LOW) | Asserting LOW enables corresponding 8-bit port outputs; HIGH forces high-impedance state for bus sharing. |
| 1A0–1A7, 2A0–2A7 | Data I/O port A (side A) | First and second 8-bit bidirectional data lanes connected to controller-side bus (e.g., MCU or FPGA). |
| 1B0–1B7, 2B0–2B7 | Data I/O port B (side B) | First and second 8-bit bidirectional data lanes connected to peripheral-side bus (e.g., SRAM or ASIC). |
| VCC (pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins minimize IR drop and improve noise immunity across high-speed switching activity. |
| GND (pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths, reducing ground bounce in 16-bit parallel data transfers. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit control | Separate 1DIR/1OE and 2DIR/2OE allow concurrent bidirectional transfers on two data sub-buses without arbitration logic. |
| Bus hold on all data inputs | Eliminates external pull resistors on unused A/B pins, reducing BOM count and PCB area in space-constrained modules. |
| IOFF partial power-down | Outputs disable automatically when VCC = 0 V, preventing reverse current flow in hot-pluggable backplane cards. |
| Schmitt-trigger inputs | Input hysteresis ≥0.3 V ensures reliable latching of slow-rising signals from mechanical switches or long traces. |
| 5.5 V tolerant inputs | Enables direct interface with 5 V legacy peripherals (e.g., EEPROMs, UARTs) while powered from 3.3 V or lower rails. |
Applications
| Industrial PLC Backplane | FPGA-to-ASIC Interconnect |
|---|---|
Use Scenario: Bidirectional data exchange between a 3.3 V FPGA master and multiple 5 V I/O modules on a DIN-rail mounted PLC backplane. IC Role / Device Role / Timing Role: Voltage-translating bus transceiver managing 16-bit parallel address/data bus with independent direction control per module slot. Use Value: Eliminates discrete level shifters per line; bus hold prevents glitches during module insertion/removal; IOFF protects FPGA during hot-swap events. |
Use Scenario: High-speed configuration and status data transfer between a Xilinx Artix-7 FPGA and a custom ASIC implementing motor control logic. IC Role / Device Role / Timing Role: Synchronous 16-bit bidirectional data bridge with sub-3 ns propagation delay, synchronized to FPGA clock domain. Use Value: Meets setup/hold timing at 100 MHz bus frequency; Schmitt inputs reject noise from adjacent PWM traces; dual OE enables burst-mode handshaking. |
| Memory Expansion Interface | Automotive ECU Data Bus |
Use Scenario: Expanding external SRAM capacity on an ARM Cortex-M7 microcontroller running at 1.2 V core voltage but interfacing with 3.3 V parallel memory. IC Role / Device Role / Timing Role: Level-shifting transceiver buffering 16-bit data/address bus between MCU and 3.3 V SRAM, with direction controlled by MEMRD/MEMWR signals. Use Value: Wide VCC range (1.2–3.6 V) matches MCU I/O voltage; bus hold maintains SRAM bus state during MCU sleep modes; low 2.4 ns tpd avoids timing closure issues. |
Use Scenario: Isolating diagnostic communication lines between a 3.3 V microcontroller and 5 V CAN transceiver or sensor cluster in engine control units. IC Role / Device Role / Timing Role: Robust bidirectional signal conditioner for non-CAN debug and calibration buses (e.g., JTAG, SWD, or proprietary serial links). Use Value: -40 °C to +125 °C rating meets AEC-Q100 Grade 1 requirements; 5.5 V tolerance withstands load-dump transients; HBM >2000 V survives ESD events in service bays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC16245ADGG | No bus hold circuit; identical pinout, timing, and voltage specs; IOFF and 5.5 V tolerance retained. | Requires external pull-up/down resistors on unused data lines; unsuitable where floating inputs must be stabilized without added components. | Select when BOM cost reduction is prioritized over board space savings and when all data lines are actively driven. |
| SN74LVC16245ADGGR | Texas Instruments variant; same 48-pin TSSOP package; propagation delay 3.5 ns (vs. 2.4 ns); higher ICC (max 80 μA vs. 20 μA). | Marginally slower timing limits use in >80 MHz synchronous buses; higher static current affects battery life in always-on modules. | Select only if TI supply chain preference overrides timing and power constraints in low-frequency industrial gateways. |
Compared with 74LVCH16245AEV,551, the 74LVC16245ADGG lacks bus hold-increasing component count-while SN74LVC16245ADGGR trades 1.1 ns of speed and 60 μA of quiescent current for vendor alignment, making the Nexperia part optimal for compact, low-power, high-reliability 16-bit bus translation.
Availability
74LVCH16245AEV,551 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA-to-ASIC interconnects, and automotive ECU data buses requiring stable component supply across extended temperature ranges and mixed-voltage environments.
Supply support for 74LVCH16245AEV,551 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 technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVCH16245AEV,551 belongs to Nexperia's LVC/LVCH advanced logic family, engineered specifically for low-voltage, high-noise-immunity bidirectional bus interfacing in space- and power-constrained embedded systems.
FAQ
Does 74LVCH16245AEV,551 support hot-swap operation?
Yes. Its IOFF circuitry actively disables outputs when VCC = 0 V, limiting backflow current to ±10 μA maximum. This prevents damage during live insertion into powered backplanes and ensures safe operation in modular industrial systems where boards may be replaced without powering down the entire chassis.
Can 74LVCH16245AEV,551 interface directly with 5 V TTL logic?
Yes. All inputs tolerate up to 5.5 V regardless of VCC level (1.2–3.6 V), allowing direct connection to 5 V TTL outputs without external level shifters. Outputs swing rail-to-rail (0 V to VCC), so 5 V peripherals must interpret VCC-referenced HIGH levels-verified compatible with standard TTL input thresholds.
What is the function of bus hold, and how does it affect PCB layout?
Bus hold maintains the last valid logic state on any floating data input (1A0–1A7, 1B0–1B7, etc.) using internal feedback circuitry drawing ±75 μA at 3.0 V. This eliminates the need for external 10 kΩ pull-up/down resistors, reducing component count, saving PCB area, and avoiding signal integrity issues caused by resistor parasitics on high-speed buses.
How does the dual OE/DIR architecture improve system design flexibility?
Dual independent OE and DIR controls (1OE/1DIR and 2OE/2DIR) allow simultaneous yet distinct operation of two 8-bit sub-buses-for example, reading from one peripheral while writing to another. This removes the need for external multiplexers or additional control logic, simplifying timing analysis and reducing gate count in FPGA-based glue logic.
74LVCH16245AEV,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- Package/Case:
- 56-VFBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-VFBGA (4.5x7)
74LVCH16245AEV,551 FAQ
1.How can I place an order for 74LVCH16245AEV,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH16245AEV,551 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 74LVCH16245AEV,551 reliable?
The price and inventory of 74LVCH16245AEV,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH16245AEV,551 is usually 5 days.
3.What payment methods are accepted for 74LVCH16245AEV,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH16245AEV,551 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH16245AEV,551?
74LVCH16245AEV,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH16245AEV,551 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 74LVCH16245AEV,551?
For technical support, including 74LVCH16245AEV,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH16245AEV,551 requirements.
6.How does Aetrix verify that 74LVCH16245AEV,551 is sourced from the original manufacturer or authorized distributors?
All 74LVCH16245AEV,551 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 74LVCH16245AEV,551 meets industry standards.
7.What is the process for return or replacement of 74LVCH16245AEV,551?
All 74LVCH16245AEV,551 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH16245AEV,551, 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 74LVCH16245AEV,551 part is unused and in its original packaging.
Return procedure for 74LVCH16245AEV,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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