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NXP Semiconductors 74ALVCH16543DGG:11
- Part No.:
- 74ALVCH16543DGG:11
- Manufacturer:
- NXP Semiconductors
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVCH16543DGG:11.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,396
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Product details
Overview
74ALVCH16543DGG:11 from Nexperia is a 16-bit dual-octal D-type registered transceiver with independent A-to-B and B-to-A data paths, 3-state non-inverting outputs, bus hold on all inputs, and ±24 mA drive at 3.0 V. It operates from 1.2 V to 3.6 V, supports JEDEC 8-1A, and is used in high-density bidirectional bus interfaces for industrial control backplanes and memory expansion modules.
For engineers reviewing the 74ALVCH16543DGG:11 datasheet, 74ALVCH16543DGG:11 pinout, 74ALVCH16543DGG:11 application, or 74ALVCH16543DGG:11 equivalent, this page delivers verified timing parameters (tPHL/tPLH = 3.8 ns @ 3.3 V), bus hold current specs, output enable/disable times, latch enable pulse width requirements, and TSSOP-56 package layout details critical for signal integrity and PCB layout validation.
Technical Context
The 74ALVCH16543DGG:11 implements two independent octal transceiver sections, each with back-to-back D-latches enabling simultaneous storage of data flowing in opposite directions. Each section features separate A-to-B and B-to-A latch enable (nLEAB/nLEBA), output enable (nOEAB/nOEBA), and direction enable (nEAB/nEBA) controls.
It integrates bus hold circuitry on all data I/O pins to maintain valid logic levels on floating inputs, eliminating external pull-ups. Output drive capability supports direct interface with 50 Ω transmission lines at 85 °C and TTL-level systems, with CMOS low-power operation across 1.2–3.6 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.2 V to 3.6 V - enables interoperability with mixed-voltage 1.8 V/2.5 V/3.3 V system buses. |
| tPHL/tPLH | 3.8 ns @ VCC = 3.3 V, CL = 50 pF - ensures sub-4 ns propagation delay for high-speed bidirectional data transfer. |
| IO Drive | ±24 mA @ VCC = 3.0 V - provides sufficient current to drive 50 Ω transmission lines without external buffers. |
| Bus Hold Current | IBHL = 75 µA / IBHH = −75 µA @ VCC = 3.0 V - actively sustains valid logic states on unused inputs, preventing metastability. |
| 3-State Enable Time | tPZH/tPZL = 2.9 ns @ VCC = 3.0–3.6 V - guarantees fast output activation for time-critical bus arbitration. |
| Input Capacitance | CI = 4.0 pF - minimizes capacitive loading on upstream drivers, preserving signal edge rates. |
| Power Dissipation Cap. | CPD = 44 pF (outputs enabled) - enables accurate dynamic power estimation using PD = CPD × VCC² × fi. |
Pinout & Package
TSSOP-56 plastic package (SOT364-1), 14.1 mm × 6.2 mm body, 0.5 mm pitch, 1.2 mm max height, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 28 | 1OEAB, 2OEAB | A-to-B output enable for register 1 or 2 - active LOW enables B-side outputs; HIGH places them in high-impedance state. |
| 2, 27 | 1LEAB, 2LEAB | A-to-B latch enable for register 1 or 2 - LOW makes latches transparent; rising edge stores A-data into B-latches. |
| 3, 26 | 1EAB, 2EAB | A-to-B direction enable for register 1 or 2 - LOW permits data flow from A to B ports; controls functional path activation. |
| 4, 11, 18, 25, 32, 39, 46, 53 | GND | Ground reference - eight dedicated ground pins ensure low-impedance return paths and reduce ground bounce in 16-bit operation. |
| 5–6, 8–10, 12–14 | 1A0–1A7 | Data I/O port A, register 1 - bidirectional signals with integrated bus hold; connects to local processor or controller bus. |
| 7, 22, 35, 50 | VCC | Supply voltage - four VCC pins distribute power delivery across the die, minimizing IR drop and improving noise immunity. |
| 15–17, 19–21, 23–24 | 2A0–2A7 | Data I/O port A, register 2 - second octal A-port for parallel bus extension or multi-channel interfacing. |
| 29, 56 | 2OEBA, 1OEBA | B-to-A output enable for register 2 or 1 - active LOW enables A-side outputs during reverse-direction data transfer. |
| 30, 55 | 2LEBA, 1LEBA | B-to-A latch enable for register 2 or 1 - rising edge captures B-data into A-latches for storage and retransmission. |
| 31, 54 | 2EBA, 1EBA | B-to-A direction enable for register 2 or 1 - LOW activates B-to-A data path, enabling full-duplex register staging. |
| 33–34, 36–38, 40–42 | 2B7–2B0 | Data I/O port B, register 2 - second octal B-port supporting independent downstream peripheral or memory interface. |
| 43–44, 45, 47–49, 51–52 | 1B7–1B0 | Data I/O port B, register 1 - primary B-port for external bus connection; includes bus hold on all pins. |
Key Features
| Feature | Design Value |
|---|---|
| Dual octal registered transceiver | Two independent 8-bit bidirectional data paths with separate latch and output controls per direction - enables concurrent A→B and B→A data staging without contention. |
| MULTIBYTE™ flow-through pin-out | Optimized pin arrangement minimizes trace crossovers and reduces PCB layer count in dense bus routing applications. |
| Integrated bus hold circuitry | Eliminates need for external pull-up/pull-down resistors on all 32 data I/O pins - reduces BOM cost and board space while preventing floating-input faults. |
| 3-state non-inverting outputs | Ensures signal polarity consistency across bidirectional transfers - avoids logic inversion errors in memory-mapped or address/data multiplexed systems. |
| JEDEC 8-1A compliance | Guarantees interoperability with industry-standard logic families and test equipment, simplifying qualification in automotive and industrial designs. |
Applications
| Industrial Backplane Interface | Memory Expansion Module |
|---|---|
|
Use Scenario: Bidirectional data transfer between CPU module and I/O carrier board in modular PLC chassis with hot-swap capability. IC Role / Device Role / Timing Role: Registered transceiver providing isolated, latch-controlled data staging between mismatched clock domains and voltage rails. Use Value: Enables deterministic timing via separate nLEAB/nLEBA controls and eliminates bus contention during module insertion/removal using 3-state outputs. |
Use Scenario: Adding external SRAM or Flash to an embedded microcontroller with limited address/data bus width. IC Role / Device Role / Timing Role: Dual-octal transceiver buffering and extending 16-bit data bus while maintaining setup/hold timing margins. Use Value: ±24 mA drive supports direct connection to memory devices; bus hold prevents invalid reads during address decode delays. |
| Telecom Line Card Buffering | Automotive Diagnostic Gateway |
|
Use Scenario: Isolating and conditioning bidirectional JTAG or MDIO signals between baseband processor and PHY ICs on high-speed line cards. IC Role / Device Role / Timing Role: Registered repeater with precise tPHL/tPLH ≤ 4.3 ns ensuring signal integrity across long PCB traces. Use Value: Low 4.0 pF input capacitance preserves edge rate; 3-state control allows dynamic bus sharing among multiple PHYs. |
Use Scenario: Interfacing CAN/LIN microcontrollers with legacy diagnostic connectors requiring 5 V tolerant bidirectional data lines. IC Role / Device Role / Timing Role: Voltage-level translating transceiver operating at 3.3 V core while driving 5 V bus loads via robust output stage. Use Value: 3.6 V absolute max VCC and ±50 mA output rating support safe interfacing with 5 V legacy systems without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16543DGGR | Same functionality and pinout; Texas Instruments version with identical AC/DC specs and TSSOP-56 package. | Qualified to TI's AEC-Q100 Grade 2 for extended temperature automotive use (−40 °C to +105 °C). | Select SN74ALVCH16543DGGR when automotive-grade temperature margin or TI-specific qualification is required. |
| 74LVC16543ADGG | Lower drive (±24 mA only at 3.3 V), no bus hold, 1.65–3.6 V VCC range; otherwise functionally identical pinout and logic. | Lacks bus hold - requires external termination; suited for cost-sensitive consumer applications where floating inputs are controlled. | Choose 74LVC16543ADGG only if bus hold is unnecessary and TI/Nexperia cross-supply chain flexibility is needed. |
Compared with SN74ALVCH16543DGGR and 74LVC16543ADGG, the 74ALVCH16543DGG:11 uniquely combines bus hold, JEDEC 8-1A compliance, and guaranteed ±24 mA drive across its full 1.2–3.6 V range - making it optimal for industrial backplanes where input stability and mixed-voltage robustness are mandatory.
Availability
74ALVCH16543DGG:11 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion modules, and telecom line card buffering requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for 74ALVCH16543DGG: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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP's Standard Products division in 2017 and focused on automotive, industrial, computing, and consumer markets.
The 74ALVCH16543DGG:11 belongs to Nexperia's advanced ALVCH logic family, engineered for high-speed, low-power bidirectional bus interfacing in space-constrained industrial and telecom systems requiring robust signal integrity and mixed-voltage compatibility.
FAQ
What is the maximum operating temperature for the 74ALVCH16543DGG:11?
The 74ALVCH16543DGG:11 is rated for operation from −40 °C to +85 °C ambient temperature, as specified in the Recommended Operating Conditions table. This range is validated across all electrical parameters including propagation delay, output drive, and bus hold performance - ensuring reliable operation in industrial control cabinets and telecom equipment enclosures.
Does the 74ALVCH16543DGG:11 support 1.8 V logic interfaces?
Yes, the 74ALVCH16543DGG:11 supports 1.8 V operation within its 1.2 V to 3.6 V VCC range. DC characteristics including VIH/VIL thresholds and output drive are fully specified down to 1.2 V, and AC timing (e.g., tPHL/tPLH = 5.1 ns max @ VCC = 2.3–2.7 V) remains guaranteed - enabling seamless integration with 1.8 V FPGAs and microcontrollers.
How does the bus hold feature work on the 74ALVCH16543DGG:11?
The 74ALVCH16543DGG:11 incorporates active bus hold circuitry on all 32 data I/O pins (1A0–1A7, 2A0–2A7, 1B0–1B7, 2B0–2B7). When an input floats, the internal circuit applies ~75 µA LOW or −75 µA HIGH sustaining current to maintain the last-valid logic state - eliminating external pull resistors and preventing metastability in unconnected or high-impedance bus segments.
Can the 74ALVCH16543DGG:11 be used in place of two separate 74ALVCH16245 and 74ALVCH16373 devices?
Yes - the 74ALVCH16543DGG:11 explicitly combines the functions of the 74ALVCH16245 (octal bus transceiver) and 74ALVCH16373 (octal D-type latch) in one device, as stated in the datasheet DESCRIPTION section. Its dual-register architecture with independent nLEAB/nLEBA and nOEAB/nOEBA controls replicates the combined behavior while reducing footprint, interconnect complexity, and power consumption.
What is the minimum pulse width required for the latch enable (nLEAB/nLEBA) inputs on the 74ALVCH16543DGG:11?
The minimum nLEXX pulse width LOW is 0.9 ns at VCC = 3.0–3.6 V and 1.3 ns at VCC = 2.7 V, per the AC Characteristics tables. This ultra-short requirement supports high-frequency latch strobing in real-time control loops and high-speed memory interfaces - but must be verified against actual board-level signal integrity, as PCB trace inductance and capacitance may affect achievable edge rates.
74ALVCH16543DGG:11 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ALVCH
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- 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:
- 56-TSSOP
74ALVCH16543DGG:11 FAQ
1.How can I place an order for 74ALVCH16543DGG:11 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16543DGG: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 74ALVCH16543DGG:11 reliable?
The price and inventory of 74ALVCH16543DGG:11 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16543DGG:11 is usually 5 days.
3.What payment methods are accepted for 74ALVCH16543DGG:11?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16543DGG:11 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVCH16543DGG:11?
74ALVCH16543DGG:11 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16543DGG: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 74ALVCH16543DGG:11?
For technical support, including 74ALVCH16543DGG:11 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16543DGG:11 requirements.
6.How does Aetrix verify that 74ALVCH16543DGG:11 is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16543DGG: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 74ALVCH16543DGG:11 meets industry standards.
7.What is the process for return or replacement of 74ALVCH16543DGG:11?
All 74ALVCH16543DGG:11 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16543DGG: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 74ALVCH16543DGG:11 part is unused and in its original packaging.
Return procedure for 74ALVCH16543DGG:11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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