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Nexperia USA Inc. 74ALVCH16245DL,112
- Part No.:
- 74ALVCH16245DL,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ALVCH16245DL,112.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,896
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Product details
Overview
74ALVCH16245DL,112 from Nexperia is a 16-bit CMOS bus transceiver with dual 8-bit direction control (1DIR/2DIR), dual 3-state output enables (1OE/2OE), active bus hold on all data I/Os, and IOFF partial power-down protection. It operates from 1.2 V to 3.6 V, delivers ±24 mA drive at 3.0 V, and supports bidirectional data flow in memory expansion, FPGA I/O bridging, and industrial controller backplanes.
For engineers reviewing the 74ALVCH16245DL,112 datasheet, 74ALVCH16245DL,112 pinout, 74ALVCH16245DL,112 application, or 74ALVCH16245DL,112 equivalent, key selection criteria include bus hold functionality, IOFF-enabled safe power sequencing, TSSOP48 thermal performance at 85 °C, and Schmitt-trigger input tolerance for slow-edge legacy buses.
Technical Context
This device implements two independent 8-bit transceiver blocks sharing no internal logic coupling-each with dedicated DIR and OE pins enabling asymmetric bus control. Its bus hold circuitry actively maintains valid logic states on floating A/B data lines without external resistors, reducing BOM count and layout complexity in hot-swap or modular systems.
The IOFF feature disables outputs and blocks reverse current when VCC = 0 V, satisfying JEDEC JESD78 Class II.A latch-up immunity (>2500 mA) and enabling live insertion into partially powered backplanes. Schmitt-trigger inputs ensure noise immunity across wide voltage transitions (10 ns/V min slew rate at 3.0–3.6 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables direct interface with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Output Drive Strength | ±24 mA at 3.0 V - Sufficient to drive 50 Ω transmission lines at 85 °C, supporting high-speed PCB interconnects. |
| Propagation Delay | 1.9 ns typical at 3.3 V - Meets timing budgets for ≤500 MHz data transfer in synchronous bus architectures. |
| Bus Hold Current | ±75 μA at 3.0 V - Actively clamps unused inputs to valid logic levels, eliminating need for pull-up/down resistors. |
| IOFF Leakage | <10 μA at 25 °C - Prevents damaging backflow current during partial power-down, critical for hot-plug systems. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Robust handling during board assembly and field service without additional protection devices. |
| Operating Temperature | −40 °C to +85 °C - Qualified for industrial automation, telecom infrastructure, and embedded control environments. |
Pinout & Package
TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch, exposed thermal pad not present. Designed for fine-pitch surface-mount assembly with low-inductance multiple VCC/GND pins to suppress ground bounce.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Active-HIGH signal selecting data flow direction per 8-bit bank (A→B or B→A). |
| 1OE, 2OE | Output enable input | Active-LOW control disabling respective 8-bit output bank into high-impedance state. |
| 1A0–1A7, 2A0–2A7 | Data I/O port A | Bidirectional data terminals for first/second 8-bit bus segment; feature bus hold. |
| 1B0–1B7, 2B0–2B7 | Data I/O port B | Bidirectional data terminals for complementary 8-bit bus segment; feature bus hold. |
| VCC (pins 7, 18, 31, 42) | Power supply | Four distributed supply pins minimize IR drop and improve noise immunity across wide operating range. |
| GND (pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight ground pins reduce ground loop inductance and suppress simultaneous switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Bus hold on all data I/Os | Eliminates external pull resistors by maintaining valid logic states on floating inputs, reducing component count and board area. |
| IOFF partial power-down | Prevents back-current flow when VCC = 0 V, enabling safe insertion into live backplanes and multi-rail systems. |
| Schmitt-trigger inputs | Accepts slow-rise/fall signals (≥10 ns/V at 3.3 V), ensuring reliable operation with legacy TTL or RC-filtered control lines. |
| MULTIBYTE™ flow-through pinout | Minimizes trace length and crosstalk in high-density layouts via interleaved A/B port mapping across package edges. |
| Low-noise power distribution | Multiple VCC/GND pins and optimized internal routing reduce ground bounce and supply rail collapse during fast switching. |
Applications
| Memory Expansion Interface | FPGA I/O Bridging |
|---|---|
Use Scenario: Connecting microcontroller parallel bus to external SRAM or Flash memory with mismatched voltage domains. IC Role / Device Role / Timing Role: Bidirectional level-translating transceiver managing address/data multiplexing and direction control under CPU arbitration. Use Value: Bus hold prevents memory bus float during CPU wait states; IOFF protects memory from backfeed when MCU resets. | Use Scenario: Interfacing FPGA GPIO banks to legacy ASIC peripherals operating at different supply voltages. IC Role / Device Role / Timing Role: Isolating and translating 16-bit control/status data between FPGA fabric and off-chip logic with independent direction control. Use Value: Dual DIR/OE pins allow asymmetric read/write timing; Schmitt triggers tolerate FPGA output slew variations. |
| Industrial Backplane Bus | Hot-Swap Module Interface |
Use Scenario: Data exchange between modular PLC I/O cards and central controller over shared 16-bit backplane. IC Role / Device Role / Timing Role: Repeater and isolation buffer preventing ground loops and signal degradation across card slots. Use Value: Eight GND pins suppress common-mode noise; TSSOP48 thermal profile sustains 85 °C ambient operation. | Use Scenario: Enabling safe insertion/removal of daughterboards into powered carrier boards without disrupting system operation. IC Role / Device Role / Timing Role: Bus isolator enforcing power sequencing compliance via IOFF and controlled enable timing. Use Value: IOFF blocks reverse current during plug-in; bus hold holds control lines stable before firmware initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16245DGGR | TI version with identical pinout, bus hold, and IOFF; slightly higher max tpd (3.2 ns vs 3.0 ns at 3.3 V). | Same industrial temperature range but tighter VCC min (1.65 V vs 1.2 V), limiting ultra-low-voltage use cases. | Select when TI ecosystem alignment or alternate sourcing is required; verify timing margin in 1.2–1.65 V designs. |
| 74LVC16245APAG | ON Semiconductor part lacks bus hold; requires external pull resistors; IOFF supported but lower ESD rating (HBM 2000 V vs 2000+ V). | Compatible for cost-sensitive non-hot-swap applications where floating inputs are avoided by design. | Choose only if bus hold is unnecessary and external resistors are acceptable; confirm ESD robustness in handling environments. |
Compared with SN74ALVCH16245DGGR and 74LVC16245APAG, the 74ALVCH16245DL,112 uniquely combines sub-1.65 V operation, guaranteed bus hold, and industry-leading HBM/CDM ESD protection-making it optimal for mixed-voltage, hot-plug, and high-reliability industrial interfaces.
Availability
74ALVCH16245DL,112 is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA I/O bridging, and industrial backplane buses requiring stable component supply, long-term lifecycle support, and consistent TSSOP48 packaging.
Supply support for 74ALVCH16245DL,112 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 logic, analog, and MOSFET solutions with focus on efficiency, reliability, and sustainability in volume production.
The 74ALVCH series targets industrial and computing applications demanding robust bus interfacing, low-voltage compatibility, and fail-safe power sequencing-especially where bus stability and hot-swap resilience are critical.
FAQ
Does 74ALVCH16245DL,112 support 5 V tolerant inputs?
No. The 74ALVCH16245DL,112 has overvoltage-tolerant inputs only up to VCC + 0.5 V (max 4.1 V at 3.6 V supply). Unlike the 74ALVC16245 variant, it does not support 5.5 V input tolerance. Direct connection to 5 V buses requires external level translation.
How does bus hold function interact with output enable states?
Bus hold remains active on all data I/Os (1A0–1A7, 1B0–1B7, etc.) regardless of OE state-holding floating lines at valid logic levels even when outputs are disabled. This prevents metastability during configuration or reset sequences before OE activation.
What is the maximum capacitive load this transceiver can drive reliably?
Per datasheet Table 9, the device is characterized for CL = 30 pF (2.3–2.7 V) and CL = 50 pF (3.0–3.6 V) loads with guaranteed timing. Driving >50 pF may increase propagation delay beyond spec (e.g., >3.0 ns at 3.3 V) and require empirical validation for signal integrity.
Can 1DIR and 2DIR be tied together for unified 16-bit operation?
Yes. Connecting 1DIR and 2DIR allows synchronized direction control across both 8-bit banks, enabling true 16-bit unidirectional data transfer. Ensure shared control net impedance and slew rate meet Schmitt-trigger input requirements (≥10 ns/V at 3.3 V).
74ALVCH16245DL,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVCH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
74ALVCH16245DL,112 FAQ
1.How can I place an order for 74ALVCH16245DL,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16245DL,112 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 74ALVCH16245DL,112 reliable?
The price and inventory of 74ALVCH16245DL,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16245DL,112 is usually 5 days.
3.What payment methods are accepted for 74ALVCH16245DL,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16245DL,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVCH16245DL,112?
74ALVCH16245DL,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16245DL,112 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 74ALVCH16245DL,112?
For technical support, including 74ALVCH16245DL,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16245DL,112 requirements.
6.How does Aetrix verify that 74ALVCH16245DL,112 is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16245DL,112 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 74ALVCH16245DL,112 meets industry standards.
7.What is the process for return or replacement of 74ALVCH16245DL,112?
All 74ALVCH16245DL,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16245DL,112, 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 74ALVCH16245DL,112 part is unused and in its original packaging.
Return procedure for 74ALVCH16245DL,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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