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Nexperia USA Inc. 74ALVCH16952DGGY
- Part No.:
- 74ALVCH16952DGGY
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVCH16952DGGY.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,417
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Product details
Overview
74ALVCH16952DGGY from Nexperia is a 16-bit dual-octal registered transceiver with 3-state outputs, designed for bidirectional data flow between two parallel buses. It features two independent sections (A↔B and A↔B), each with separate clock (nCPAB/nCPBA), clock enable (nCEAB/nCEBA), and output enable (nOEAB/nOEBA) controls, operates from 2.3 V to 3.6 V, supports -40 °C to +85 °C ambient, and delivers ≤3.9 ns propagation delay at 3.3 V for high-speed bus interfacing in industrial control backplanes.
For engineers reviewing the 74ALVCH16952DGGY datasheet, 74ALVCH16952DGGY pinout, 74ALVCH16952DGGY application, or 74ALVCH16952DGGY equivalent, this device serves as a timing-critical, low-noise registered bus interface with bus-hold inputs, JEDEC JESD8-B compliance, and TSSOP56 packaging optimized for signal integrity in dense PCB layouts.
Technical Context
The 74ALVCH16952DGGY implements two identical octal registered transceiver sections, each using edge-triggered D-type flip-flops clocked on the rising edge of nCPAB/nCPBA. Data latching requires active-low nCEAB/nCEBA, while output visibility depends on active-low nOEAB/nOEBA - enabling independent control of direction, timing, and bus drive per section.
Its MULTIBYTE™ flow-through pinout minimizes trace skew across all 16 data lines, and integrated bus-hold circuitry (IBHL/IBHH ≥75 μA) eliminates external pull-ups on unused inputs. The device meets ANSI/ESDA/JEDEC JS-001 Class 2 (≥2000 V HBM) and JS-002 Class C3 (≥1000 V CDM) ESD protection standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.3 V to 3.6 V - compatible with 2.5 V and 3.3 V logic systems without level translation |
| Propagation Delay | ≤3.9 ns at VCC = 3.3 V - enables >250 MHz bus operation with tight timing margins |
| Output Drive | ±24 mA at VCC = 3.0 V - directly drives 50 Ω transmission lines at 85 °C |
| Bus Hold Current | 75–150 μA LOW / -75–-175 μA HIGH - maintains valid logic states on floating inputs without external resistors |
| Operating Temperature | -40 °C to +85 °C - qualified for industrial-grade embedded and communications equipment |
| ESD Protection | HBM ≥2000 V, CDM ≥1000 V - exceeds JEDEC JS-001/JS-002 requirements for robust board-level handling |
| Power Dissipation Cap | 500 mW - supports continuous operation in thermally constrained TSSOP56 packages |
Pinout & Package
TSSOP56 (SOT364-1) package: plastic thin shrink small outline, 56 leads, 6.1 mm body width, 0.5 mm lead pitch, 1.2 mm max height - optimized for automated assembly and thermal performance in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A0–1A7, 1B0–1B7, 2A0–2A7, 2B0–2B7 | Data I/O terminals (bidirectional) | Octal A/B data paths per section; pins assigned to minimize crosstalk and routing congestion |
| 1OEAB, 1OEBA, 2OEAB, 2OEBA | Active-low output enable | Independent 3-state control per direction per section - enables time-multiplexed bus sharing |
| 1CEAB, 1CEBA, 2CEAB, 2CEBA | Active-low clock enable | Gates clock sampling; allows synchronous data capture only when asserted, reducing dynamic power |
| 1CPAB, 1CPBA, 2CPAB, 2CPBA | Rising-edge clock inputs | Edge-triggered register clocks - decouples data transfer timing from system clock domain |
| VCC (pins 7, 22, 35, 50) | Power supply | Four distributed VCC pins reduce IR drop and improve noise immunity across wide bus |
| GND (pins 4, 11, 18, 25, 32, 39, 46, 53) | Ground reference | Eight GND pins provide low-inductance return paths - critical for minimizing ground bounce in 16-bit switching |
Key Features
| Feature | Design Value |
|---|---|
| MULTIBYTE™ flow-through pinout | Minimizes trace length mismatch across all 16 data lines - reduces skew to <100 ps for synchronized parallel transfers |
| Integrated bus-hold circuitry | Eliminates need for 10 kΩ external pull-up/down resistors on unused inputs - saves PCB area and BOM cost |
| Low-inductance power/ground architecture | Four VCC and eight GND pins suppress simultaneous switching noise - maintains signal integrity at 250+ MHz toggle rates |
| TTL-compatible input thresholds | VIH = 2.0 V min, VIL = 0.8 V max at VCC = 3.3 V - ensures reliable interfacing with legacy 5 V TTL outputs via voltage divider or direct connection |
| JEDEC JESD8-B compliance | Guarantees interoperability with industry-standard 2.5 V/3.3 V logic families - simplifies mixed-voltage system design |
Applications
| Industrial Backplane Interface | Memory Expansion Module |
|---|---|
|
Use Scenario: Bidirectional data transfer between CPU module and I/O expansion cards in modular PLC chassis. IC Role / Device Role / Timing Role: Registered transceiver synchronizing asynchronous bus transactions with local clock domains while isolating noise between slots. Use Value: 3.9 ns tpd and bus-hold inputs prevent metastability and floating-bus faults during hot-swap events. |
Use Scenario: Interfacing FPGA-based memory controller to DDR2 SODIMM modules in test instrumentation. IC Role / Device Role / Timing Role: Direction-controlled buffer registering address/data/control signals to meet setup/hold timing across variable trace lengths. Use Value: Independent OE/CE per section enables staggered enable sequencing - avoids simultaneous switching current spikes exceeding 100 mA ICC limit. |
| Automated Test Equipment (ATE) Fixture | High-Speed Data Acquisition Card |
|
Use Scenario: Signal conditioning and level-shifting between 3.3 V FPGA I/O and 2.5 V ASIC under test in boundary-scan test fixtures. IC Role / Device Role / Timing Role: Registered repeater providing deterministic latency and impedance-matched 50 Ω drive for test pattern delivery. Use Value: ±24 mA drive capability sustains signal integrity over 15 cm FR4 traces at 200 MHz without external termination. |
Use Scenario: Isolating ADC digital output bus from FPGA processing core in 16-bit, 1 MSPS acquisition systems. IC Role / Device Role / Timing Role: Clock-domain crossing bridge capturing sampled data on one edge and presenting it synchronously to processor clock. Use Value: Dual-section architecture allows concurrent capture (A→B) and readout (B→A) - doubling effective throughput without FIFO logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16952DGGR | Same die, identical specs, RoHS-compliant TSSOP56 package - differs only in tape-and-reel packaging (DGGY = tray, DGGR = reel) | No functional difference; reel format preferred for high-volume SMT production | Select DGGR for automated placement; DGGY for prototyping or low-volume hand assembly |
| 74LVC16952PW | Lower drive (±24 mA @ 3.3 V vs. ±12 mA @ 3.3 V), higher tpd (≤5.2 ns), no bus-hold - LVC family, not ALVCH | Not suitable for noise-sensitive or floating-input environments; lacks bus-hold and high-drive capability | Only consider if cost is primary constraint and system already uses external pull-ups and lower-speed timing budgets |
Compared with SN74ALVCH16952DGGR, the DGGY offers identical electrical performance but different packaging logistics; versus 74LVC16952PW, it provides superior noise immunity, faster timing, and reduced BOM count via integrated bus-hold - making it the preferred choice for industrial and test equipment where reliability and signal fidelity are critical.
Availability
74ALVCH16952DGGY is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion modules, automated test equipment fixtures, and high-speed data acquisition cards requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 74ALVCH16952DGGY 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 logic, analog, and discrete components - founded in 2017 as a spin-off from NXP, now serving automotive, industrial, and computing markets with ISO/TS 16949-certified manufacturing.
The 74ALVCH16952 belongs to Nexperia's advanced ALVCH logic family, engineered specifically for high-speed, low-power registered bus interfacing in noise-sensitive industrial and test systems where timing precision and signal integrity are non-negotiable.
FAQ
What is the maximum clock frequency supported by the 74ALVCH16952DGGY?
The device supports a maximum clock frequency of 350 MHz at VCC = 3.3 V, derived from its 3.9 ns propagation delay and 3.3 ns minimum clock pulse width. This rating assumes CL = 50 pF load and operation within -40 °C to +85 °C ambient - verified per Table 7 in the official Nexperia datasheet Rev. 4.
Does the 74ALVCH16952DGGY require external pull-up or pull-down resistors on unused inputs?
No. The device integrates bus-hold circuitry on all data I/O pins (1A0–1A7, 1B0–1B7, etc.), providing 75–150 μA sustaining current to maintain valid logic states without external resistors. This feature is confirmed in Table 6 (IBHL/IBHH parameters) and eliminates BOM items and layout space for pull-ups.
Can the 74ALVCH16952DGGY interface directly with 5 V TTL outputs?
Yes. Its input thresholds meet TTL compatibility: VIH = 2.0 V min and VIL = 0.8 V max at VCC = 3.3 V (Table 6), allowing direct connection to standard 5 V TTL outputs without level shifters. However, outputs remain 3.3 V logic levels and must not be driven above VCC + 0.5 V per absolute maximum ratings.
How many ground pins does the TSSOP56 package have, and why is this important?
The 74ALVCH16952DGGY in TSSOP56 (SOT364-1) has eight dedicated GND pins (pins 4, 11, 18, 25, 32, 39, 46, 53), as specified in Section 5.1 of the datasheet. This multi-GND architecture minimizes ground inductance and prevents ground bounce during simultaneous 16-bit switching - essential for maintaining signal integrity at sub-4 ns propagation delays.
74ALVCH16952DGGY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVCH
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
74ALVCH16952DGGY FAQ
1.How can I place an order for 74ALVCH16952DGGY through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16952DGGY 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 74ALVCH16952DGGY reliable?
The price and inventory of 74ALVCH16952DGGY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16952DGGY is usually 5 days.
3.What payment methods are accepted for 74ALVCH16952DGGY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16952DGGY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVCH16952DGGY?
74ALVCH16952DGGY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16952DGGY 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 74ALVCH16952DGGY?
For technical support, including 74ALVCH16952DGGY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16952DGGY requirements.
6.How does Aetrix verify that 74ALVCH16952DGGY is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16952DGGY 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 74ALVCH16952DGGY meets industry standards.
7.What is the process for return or replacement of 74ALVCH16952DGGY?
All 74ALVCH16952DGGY units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16952DGGY, 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 74ALVCH16952DGGY part is unused and in its original packaging.
Return procedure for 74ALVCH16952DGGY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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