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Nexperia USA Inc. 74ALVCH16841DGGY
- Part No.:
- 74ALVCH16841DGGY
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Latches
- Package:
- -
- Datasheet:
-
74ALVCH16841DGGY.pdf
- Description:
- 74ALVCH16841 - 20-BIT BUS INTERF
- Quantity:
- Payment:
- Shipping:
Inventory:14,765
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Product details
Overview
74ALVCH16841DGGY from Nexperia is a 20-bit bus interface D-type latch with dual 10-bit sections, 3-state non-inverting outputs, active bus hold on all data inputs, and operation across 1.2 V to 3.6 V supply. It features independent latch enable (nLE) and output enable (nOE) controls per section, ±24 mA drive at 3.0 V, and is specified for −40 °C to +85 °C industrial use in parallel bus buffering applications.
For engineers reviewing the 74ALVCH16841DGGY datasheet, 74ALVCH16841DGGY pinout, 74ALVCH16841DGGY application, or 74ALVCH16841DGGY equivalent, key selection criteria include bus hold functionality eliminating external resistors, TSSOP56 package pin compatibility with MULTIBYTE™ flow-through layout, propagation delay ≤3.9 ns at 3.3 V, and JEDEC-compliant voltage thresholds for mixed-voltage system interfacing.
Technical Context
This device implements two independent 10-bit transparent D-type latches, each with dedicated latch enable (active-HIGH) and output enable (active-LOW) control. Data is latched on the rising edge of nLE, and outputs enter high-impedance state when nOE is HIGH-without affecting internal latch states.
Each input includes integrated bus hold circuitry (IBHL/IBHH ≥75 μA at 3.0 V), maintaining valid logic levels on floating inputs without external components. The design supports 50 Ω transmission line driving at 85 °C and complies with JESD8-5 (2.3–2.7 V) and JESD8B/JESD36 (2.7–3.6 V) standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables direct interface between 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Propagation Delay (tpd) | ≤3.9 ns at VCC = 3.0–3.6 V - Supports high-speed bus timing in systems with ≤250 MHz clock-derived strobes. |
| Output Drive | ±24 mA at VCC = 3.0 V - Sufficient to drive 50 Ω transmission lines directly, reducing need for external buffers. |
| Bus Hold Current | IBHL = 75–150 μA, IBHH = −75 to −175 μA at VCC = 3.0 V - Actively holds unused inputs at valid logic levels, eliminating pull-up/down resistors. |
| Operating Temperature | −40 °C to +85 °C - Qualified for industrial-grade embedded control, instrumentation, and communications equipment. |
| Input Thresholds (VIL/VIH) | VIL ≤0.8 V, VIH ≥2.0 V at VCC = 3.0–3.6 V - Ensures reliable TTL-level compatibility and noise margin >0.7 V. |
| 3-State Disable Time (tdis) | ≤4.1 ns at VCC = 3.0–3.6 V - Minimizes bus contention windows during output state transitions. |
Pinout & Package
TSSOP56 (SOT364-1) plastic thin shrink small outline package; 56 leads; body width 6.1 mm; 0.5 mm lead pitch; exposed pad not present; RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1D0–1D9 (pins 55,54,52,51,49,48,47,45,44,43) | Data inputs, Section 1 | Independent 10-bit parallel data path for first latch section; all feature bus hold. |
| 2D0–2D9 (pins 42,41,40,38,37,36,34,33,31,30) | Data inputs, Section 2 | Independent 10-bit parallel data path for second latch section; all feature bus hold. |
| 1Q0–1Q9 (pins 2,3,5,6,8,9,10,12,13,14) | Data outputs, Section 1 | Non-inverting 3-state outputs; driven only when 1OE = LOW and data latched by 1LE. |
| 2Q0–2Q9 (pins 15,16,17,19,20,21,23,24,26,27) | Data outputs, Section 2 | Non-inverting 3-state outputs; driven only when 2OE = LOW and data latched by 2LE. |
| 1LE, 2LE (pins 56, 29) | Latch enable (active-HIGH) | Controls transparent latching: data passes to outputs when HIGH; latched when LOW. |
| 1OE, 2OE (pins 1, 28) | Output enable (active-LOW) | Enables/disables output drivers independently per section; no effect on internal latch state. |
| VCC (pins 7,22,35,50) | Power supply | Four distributed supply pins minimize IR drop and improve noise immunity in high-speed switching. |
| GND (pins 4,11,18,25,32,39,46,53) | Ground reference | Eight ground pins provide low-inductance return paths, reducing ground bounce in multi-bit switching. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 10-bit latches | Enables concurrent buffering of two separate 10-bit buses (e.g., address/data split or dual peripheral interfaces). |
| MULTIBYTE™ flow-through pinout | Input-to-output alignment minimizes PCB trace length and skew; simplifies routing in dense bus layouts. |
| Integrated bus hold on all 20 inputs | Eliminates need for 20 external pull-up/pull-down resistors, reducing BOM count and board area. |
| Low-noise power distribution | Four VCC and eight GND pins reduce simultaneous switching noise (SSN) and improve signal integrity. |
| JEDEC-compliant voltage interfaces | Supports interoperability with legacy TTL and modern low-voltage CMOS without level translation. |
Applications
| Industrial PLC Backplane Interface | Test Equipment Digital I/O Module |
|---|---|
|
Use Scenario: Isolating and latching parallel control signals between CPU and field I/O modules in programmable logic controllers. IC Role / Device Role / Timing Role: Bus interface latch synchronizing asynchronous sensor/actuator data to the backplane clock domain while enabling hot-swap-safe 3-state isolation. Use Value: Bus hold prevents floating inputs during module insertion/removal; 3.9 ns tpd ensures deterministic timing at 20 MHz backplane rates. |
Use Scenario: Buffering digital pattern generator outputs to DUT test fixtures with variable load capacitance and intermittent connections. IC Role / Device Role / Timing Role: Output latch holding stable stimulus vectors during fixture reconfiguration; 3-state enables safe disconnect without bus contention. Use Value: ±24 mA drive sustains signal integrity into 50 Ω loads; 4.1 ns tdis guarantees clean bus release before next vector load. |
| Medical Imaging Data Acquisition Board | Automated Test System (ATE) Handler Interface |
|
Use Scenario: Capturing parallel pixel data streams from multiple ADCs prior to FPGA-based image processing. IC Role / Device Role / Timing Role: Synchronized latch capturing time-aligned samples across 20-bit wide sensor channels using common LE strobe. Use Value: Dual-section architecture allows interleaved capture (e.g., odd/even lines); 1.2–3.6 V range matches mixed-supply ADC/FPGA domains. |
Use Scenario: Interfacing handler position/status signals to ATE controller under varying ESD-prone factory conditions. IC Role / Device Role / Timing Role: Robust input latch with bus hold tolerating connector bounce and ESD transients on open-circuit lines. Use Value: HBM >2000 V and CDM >1000 V protect against assembly/handling ESD; bus hold maintains defined state during contact arcing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 20-bit bus latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16841DGGR | TSSOP56 package, identical electrical specs and pinout; Texas Instruments variant with same MULTIBYTE™ layout. | No functional difference; suitable for dual-sourcing where TI qualification is required. | Select when TI's long-term availability commitment or specific quality certifications (e.g., AS9100) are mandated. |
| 74LVC16373APAG | 48-pin TSSOP; 16-bit (not 20-bit); no bus hold; 1.65–3.6 V supply; 3.5 ns tpd at 3.3 V. | Requires two devices for 20-bit width; external pull resistors needed for unused inputs. | Choose only if board space permits dual placement and bus hold is not required for system reliability. |
Compared with SN74ALVCH16841DGGR, the 74ALVCH16841DGGY offers identical performance but different supply chain origin; versus 74LVC16373APAG, it delivers native 20-bit width and integrated bus hold-reducing component count and improving robustness in floating-input scenarios.
Availability
74ALVCH16841DGGY is available at Aetrix Electronics and suitable for industrial PLC backplanes, medical imaging acquisition boards, automated test equipment I/O modules, and digital instrumentation requiring stable component supply across extended temperature ranges.
Supply support for 74ALVCH16841DGGY 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 discrete components, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.
The 74ALVCH series targets high-speed, low-voltage bus interface applications demanding robust noise immunity, mixed-voltage interoperability, and minimal external component count in space-constrained designs.
FAQ
Does 74ALVCH16841DGGY require external pull-up or pull-down resistors on its data inputs?
No. All 20 data inputs (1D0–1D9, 2D0–2D9) integrate active bus hold circuitry, which maintains a valid logic level on floating or unterminated inputs. This eliminates the need for external resistors, reducing BOM cost and PCB area while improving system reliability during hot-swap or unconnected states.
What is the maximum guaranteed propagation delay for 74ALVCH16841DGGY at 3.3 V supply?
The maximum guaranteed propagation delay (tpd) from input to output is 3.9 ns at VCC = 3.0–3.6 V, measured under recommended operating conditions with 50 pF load. This value applies to both data-to-output (nDn → nQn) and latch-enable-to-output (nLE → nQn) paths, ensuring deterministic timing in high-speed bus applications.
Can 74ALVCH16841DGGY operate reliably at 1.8 V supply voltage?
Yes. The device is fully specified from 1.2 V to 3.6 V, including static and dynamic parameters at 1.8 V. At this voltage, VIH is guaranteed ≥1.2 V and VIL ≤0.7 V, providing >1.1 V noise margin. Propagation delay increases to ≤5.0 ns, supporting reliable operation in ultra-low-power 1.8 V systems such as portable instrumentation.
How many ground and supply pins does the TSSOP56 package provide, and why does it matter?
The TSSOP56 package provides eight GND pins (pins 4,11,18,25,32,39,46,53) and four VCC pins (pins 7,22,35,50). This distributed power/ground architecture minimizes inductance and voltage drop during simultaneous switching of multiple outputs, directly reducing ground bounce and improving signal integrity in high-speed 20-bit bus applications.
74ALVCH16841DGGY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Circuit:
- -
- Output Type:
- -
- Voltage - Supply:
- -
- Independent Circuits:
- -
- Delay Time - Propagation:
- -
- Current - Output High, Low:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74ALVCH16841DGGY FAQ
1.How can I place an order for 74ALVCH16841DGGY through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16841DGGY 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 74ALVCH16841DGGY reliable?
The price and inventory of 74ALVCH16841DGGY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16841DGGY is usually 5 days.
3.What payment methods are accepted for 74ALVCH16841DGGY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16841DGGY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVCH16841DGGY?
74ALVCH16841DGGY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16841DGGY 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 74ALVCH16841DGGY?
For technical support, including 74ALVCH16841DGGY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16841DGGY requirements.
6.How does Aetrix verify that 74ALVCH16841DGGY is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16841DGGY 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 74ALVCH16841DGGY meets industry standards.
7.What is the process for return or replacement of 74ALVCH16841DGGY?
All 74ALVCH16841DGGY units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16841DGGY, 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 74ALVCH16841DGGY part is unused and in its original packaging.
Return procedure for 74ALVCH16841DGGY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74ALVCH16841DGGY Tags
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