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NXP Semiconductors 74ALVT162821DGG512
- Part No.:
- 74ALVT162821DGG512
- Manufacturer:
- NXP Semiconductors
- Category:
- Flip Flops
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVT162821DGG512.pdf
- Description:
- BUS DRIVER, ALVT SERIES, 10-BIT
- Quantity:
- Payment:
- Shipping:
Inventory:875
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Product details
Overview
74ALVT162821DGG512 from Nexperia is a 20-bit positive-edge-triggered D-type flip-flop with integrated 30 Ω series output termination resistors, dual independent clock (1CP/2CP) and output enable (1OE/2OE) controls, and bus-hold inputs - designed for high-speed 3.3 V or 2.5 V bus interface applications in telecom backplanes and industrial control I/O modules.
For engineers reviewing the 74ALVT162821DGG512 datasheet, 74ALVT162821DGG512 pinout, 74ALVT162821DGG512 application, or 74ALVT162821DGG512 equivalent, key selection considerations include its 150 MHz maximum clock frequency, ±12 mA output drive, overvoltage-tolerant 5.5 V inputs, and TSSOP56 package with 56-pin 0.5 mm pitch for dense PCB layouts.
Technical Context
This BiCMOS device implements two independent 10-bit D-register sections sharing no internal signal paths - each section features separate clock and output-enable inputs, enabling asynchronous latching of two data streams. Its 30 Ω on-die series termination eliminates external resistors for controlled-impedance trace interfaces.
The IC supports live insertion/extraction and includes IOFF circuitry for partial power-down operation, bus-hold inputs to maintain valid logic states on unused pins without external pull-ups, and power-up 3-state behavior to prevent bus contention during system boot.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | 20-bit positive-edge-triggered D-type flip-flop, configurable as two independent 10-bit registers |
| Supply Voltage | 2.3 V to 3.6 V - supports both 2.5 V and 3.3 V system rails with guaranteed operation across full range |
| Max Clock Frequency | 150 MHz - enables high-throughput data capture in synchronous bus interfaces |
| Output Drive | +12 mA / −12 mA - sufficient to drive terminated 50 Ω transmission lines directly |
| Input Overvoltage Tolerance | 5.5 V - allows safe interfacing with 5 V TTL logic without level shifters |
| Propagation Delay | 3.2 ns typical (VCC = 3.3 V) - ensures tight timing margins in high-speed designs |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial ambient environments |
Pinout & Package
Package: TSSOP56 (SOT364-1), plastic thin shrink small outline, 56 leads, 6.1 mm body width, 0.5 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1CP, 2CP | Clock input (rising edge) | Separate clocks for 10-bit sections; triggers register update on LOW-to-HIGH transition |
| 1OE, 2OE | Output enable (active LOW) | Independent 3-state control per 10-bit section; HIGH forces outputs to high-impedance |
| 1D0–1D9, 2D0–2D9 | Data inputs | 20 total D inputs; bus-hold circuitry maintains last valid state when floating |
| 1Q0–1Q9, 2Q0–2Q9 | Data outputs | 20 total Q outputs; each includes 30 Ω series resistor for impedance matching |
| VCC (pins 7, 22, 35, 50) | Power supply | Multiple VCC pins reduce switching noise and improve power integrity |
| GND (pins 4, 11, 18, 25, 32, 39, 46, 53) | Ground reference | Eight GND pins provide low-inductance return paths and minimize ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω output termination | Eliminates need for 20 discrete 30 Ω series resistors, reducing BOM count and PCB area |
| Bus-hold inputs | Maintains valid logic levels on unconnected or unterminated data inputs without external pull-ups |
| IOFF partial power-down | Prevents current flow through inputs/outputs when VCC = 0 V, enabling hot-swap capability |
| Power-up 3-state | Outputs remain in high-impedance state until VCC stabilizes, preventing bus conflicts at power-on |
| Overvoltage-tolerant inputs | Withstands 5.5 V input signals while powered from 2.5 V or 3.3 V, simplifying mixed-voltage interconnect |
Applications
| Telecom Backplane Interface | Industrial I/O Module |
|---|---|
Use Scenario: Synchronizing parallel data between line cards and switch fabric in modular telecom chassis. IC Role / Device Role / Timing Role: 20-bit registered bus interface providing setup/hold time margin and controlled slew rate for 150 MHz backplane transfers. Use Value: Integrated 30 Ω termination and 150 MHz operation eliminate external matching components and support deterministic timing across temperature. |
Use Scenario: Isolating and buffering digital sensor/actuator signals in programmable logic controller (PLC) I/O expansion modules. IC Role / Device Role / Timing Role: Dual 10-bit register section latches field-side inputs independently under separate clock domains. Use Value: Bus-hold inputs prevent floating inputs from causing undefined states; IOFF enables safe hot-swap of I/O modules without powering down the controller. |
| Test Equipment Data Capture | High-Density FPGA Mezzanine Interface |
Use Scenario: Capturing parallel test vectors from high-speed ATE pattern generators into instrument digitizers. IC Role / Device Role / Timing Role: Positive-edge D-flip-flop capturing synchronized multi-bit waveforms with minimal skew between bits. Use Value: 3.2 ns typical propagation delay and 0.1 ns typical setup time ensure precise alignment of captured data relative to sampling clock. |
Use Scenario: Interfacing FPGA mezzanine cards with host processor buses in compact embedded systems. IC Role / Device Role / Timing Role: Level-shifting and registering 20-bit address/data bus between 3.3 V FPGA and 2.5 V processor subsystems. Use Value: 5.5 V input tolerance allows direct connection to FPGA I/O banks; dual OE control enables dynamic bus partitioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus interface register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVTH162821DGGR | TI part in 56-pin TSSOP; identical 20-bit dual-register function but uses 24 mA drive and lacks integrated 30 Ω termination | Requires external 30 Ω series resistors per output; higher drive may increase EMI in noise-sensitive systems | Select when higher output current is needed and board space permits external termination |
| 74LVC16374APAG | IDT (now Renesas) 20-bit D-flip-flop in TSSOP56; no integrated termination, 3.6 V max VCC, 24 mA drive | Higher output drive but no bus-hold or IOFF; not overvoltage tolerant beyond 3.6 V | Choose for cost-sensitive designs where external termination and pull-ups are acceptable |
Compared with SN74ALVTH162821DGGR and 74LVC16374APAG, the 74ALVT162821DGG512 uniquely integrates 30 Ω termination and bus-hold functionality in a single package - reducing component count and improving signal integrity on high-speed parallel buses without layout compromises.
Availability
74ALVT162821DGG512 is available at Aetrix Electronics and suitable for telecom backplane interfaces, industrial I/O modules, and high-density FPGA mezzanine designs requiring stable component supply and long-term production continuity.
Supply support for 74ALVT162821DGG512 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 standard logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization.
The 74ALVT162821DGG512 belongs to Nexperia's advanced ALVT logic family - engineered for high-speed, low-noise bus interface applications in industrial, telecom, and test equipment where signal integrity and thermal robustness are critical.
FAQ
What is the maximum clock frequency supported by the 74ALVT162821DGG512?
The 74ALVT162821DGG512 supports a maximum clock frequency of 150 MHz across its full operating temperature range (−40 °C to +85 °C) and supply voltage range (2.3 V to 3.6 V), as verified in the dynamic characteristics table of the official Nexperia datasheet Rev. 6.
Does the 74ALVT162821DGG512 require external termination resistors?
No, the 74ALVT162821DGG512 does not require external termination resistors because it integrates 30 Ω series resistors on all 20 outputs - explicitly confirmed in the General Description and Features sections of the Nexperia datasheet.
Can the 74ALVT162821DGG512 interface directly with 5 V TTL logic?
Yes, the 74ALVT162821DGG512 supports 5.5 V overvoltage-tolerant inputs, allowing direct connection to 5 V TTL outputs while operating from a 2.5 V or 3.3 V supply - a feature documented in Section 2 (Features and benefits) and Table 5 (Recommended operating conditions).
How many ground and supply pins does the 74ALVT162821DGG512 have?
The 74ALVT162821DGG512 has eight GND pins (pins 4, 11, 18, 25, 32, 39, 46, 53) and four VCC pins (pins 7, 22, 35, 50), as specified in the Pin configuration diagram (Fig. 5) and Pin description table (Table 2) of the Nexperia datasheet.
What is the purpose of the bus-hold feature on the 74ALVT162821DGG512?
The bus-hold feature on the 74ALVT162821DGG512 actively maintains the last valid logic state on unused or unterminated data inputs - eliminating the need for external pull-up or pull-down resistors and preventing floating inputs from causing metastability or excessive current draw.
74ALVT162821DGG512 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ALVT
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 10
- Clock Frequency:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 5ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 2.3V ~ 3.6V
- Current - Quiescent (Iq):
- 7 mA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
74ALVT162821DGG512 FAQ
1.How can I place an order for 74ALVT162821DGG512 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVT162821DGG512 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 74ALVT162821DGG512 reliable?
The price and inventory of 74ALVT162821DGG512 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVT162821DGG512 is usually 5 days.
3.What payment methods are accepted for 74ALVT162821DGG512?
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4.How is shipping managed for 74ALVT162821DGG512?
74ALVT162821DGG512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVT162821DGG512 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 74ALVT162821DGG512?
For technical support, including 74ALVT162821DGG512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVT162821DGG512 requirements.
6.How does Aetrix verify that 74ALVT162821DGG512 is sourced from the original manufacturer or authorized distributors?
All 74ALVT162821DGG512 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 74ALVT162821DGG512 meets industry standards.
7.What is the process for return or replacement of 74ALVT162821DGG512?
All 74ALVT162821DGG512 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVT162821DGG512, 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 74ALVT162821DGG512 part is unused and in its original packaging.
Return procedure for 74ALVT162821DGG512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74ALVT162821DGG512 Tags
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Texas Instruments
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74LVC1G74GT,115
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