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Nexperia USA Inc. 74ALVCH16374DGG,51
- Part No.:
- 74ALVCH16374DGG,51
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVCH16374DGG,51.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,071
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Product details
Overview
74ALVCH16374DGG,51 from Nexperia is a 16-bit edge-triggered D-type flip-flop with dual independent clock (1CP/2CP) and output enable (1OE/2OE) control, bus hold inputs, 3-state outputs, 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 -40 °C to +85 °C industrial temperature range. It is used in high-density data latching and bus interface applications in telecom backplanes and industrial PLC I/O modules.
For engineers reviewing the 74ALVCH16374DGG,51 datasheet, 74ALVCH16374DGG,51 pinout, 74ALVCH16374DGG,51 application, or 74ALVCH16374DGG,51 equivalent, key selection criteria include dual 8-bit partitioning capability, bus hold functionality for floating input immunity, IOFF-enabled safe power sequencing, TSSOP48 package thermal and routing constraints, and 3.4 ns max propagation delay at 3.3 V.
Technical Context
This device implements two independent 8-bit D-flip-flop banks, each with dedicated clock (1CP/2CP) and 3-state output enable (1OE/2OE), enabling synchronous latching of two separate 8-bit data streams. Bus hold circuitry maintains valid logic levels on all 16 D-inputs without external pull-ups, reducing BOM count and board space.
The IOFF feature actively disables outputs during partial power-down by cutting off current paths when VCC = 0 V, preventing backflow into powered sections. Its MULTIBYTE™ flow-through pinout minimizes signal crosstalk and simplifies PCB layout for high-speed parallel buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - supports mixed-voltage system interfacing (1.8 V, 2.5 V, 3.3 V rails) |
| Propagation Delay (tpd) | 3.4 ns max at VCC = 3.3 V - enables reliable operation in 200+ MHz data capture systems |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - directly drives 50 Ω transmission lines without external buffers |
| Bus Hold Current | ±75 μA typical at VCC = 3.0 V - eliminates need for external pull-up/pull-down resistors on D inputs |
| IOFF Leakage | ≤10 μA at VCC = 0 V - ensures no backfeed current during partial power-down sequences |
| Operating Temperature | -40 °C to +85 °C - qualified for industrial control and telecom infrastructure environments |
| ESD Protection | HBM >2000 V, CDM >1000 V - robust handling in automated assembly and field service |
Pinout & Package
TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch, designed for high-density surface-mount assembly with low inductance VCC/GND pin distribution.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE (Pins 1, 24) | Active-low 3-state output enable | Independent control of first/second 8-bit output bank; HIGH forces high-impedance state without affecting internal latch state |
| 1CP, 2CP (Pins 48, 25) | LOW-to-HIGH edge-triggered clock | Each clock loads corresponding D-inputs (1D0–1D7 or 2D0–2D7) only on rising edge; asynchronous to other bank |
| 1Q0–1Q7 (Pins 2,3,5,6,8,9,11,12) | 3-state true outputs (Bank 1) | Edge-triggered registered outputs; high-impedance when 1OE = HIGH; matched flow-through routing with 1Dn pins |
| 2Q0–2Q7 (Pins 13,14,16,17,19,20,22,23) | 3-state true outputs (Bank 2) | Independent 8-bit output bank synchronized to 2CP; identical timing and drive behavior as Bank 1 |
| 1D0–1D7 (Pins 47,46,44,43,41,40,38,37) | Data inputs (Bank 1) | Bus hold enabled; retains last valid logic level when un-driven; eliminates floating input risk |
| 2D0–2D7 (Pins 36,35,33,32,30,29,27,26) | Data inputs (Bank 2) | Same bus hold behavior as Bank 1; pin-aligned for symmetrical PCB layout with outputs |
| VCC (Pins 7,18,31,42) | Positive supply | Four distributed VCC pins minimize supply inductance and ground bounce in high-speed switching |
| GND (Pins 4,10,15,21,28,34,39,45) | Ground reference | Eight GND pins provide low-impedance return paths and reduce simultaneous switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit banks | Enables concurrent latching of two separate data channels (e.g., ADC sample + status byte) with no inter-bank timing dependency |
| Bus hold on all 16 D-inputs | Eliminates external biasing components and prevents metastability from floating inputs during hot-swap or configuration changes |
| IOFF partial power-down | Guarantees zero backflow current when VCC = 0 V, allowing safe sequencing in multi-rail systems with staggered power-up/down |
| MULTIBYTE™ flow-through pinout | Minimizes trace length and skew between D-inputs and Q-outputs, supporting clean 200+ MHz parallel bus timing closure |
| Low-inductance VCC/GND pin distribution | Reduces ground bounce and supply noise during simultaneous 16-bit output switching, critical for signal integrity in dense layouts |
Applications
| Telecom Backplane Interface | Industrial PLC I/O Module |
|---|---|
Use Scenario: Latching parallel status and control signals between line cards and shelf controller in modular telecom chassis. IC Role / Device Role / Timing Role: Edge-triggered register synchronizing 16-bit sideband communication bus; dual clocks isolate upstream/downstream timing domains. Use Value: Bus hold prevents glitches during card insertion/removal; IOFF protects powered backplane during hot-swap events. |
Use Scenario: Capturing real-time sensor data and actuator commands across isolated I/O expansion slots in programmable logic controllers. IC Role / Device Role / Timing Role: High-speed data latch buffering analog-to-digital converter outputs and digital output driver inputs before CPU read/write cycles. Use Value: ±24 mA drive directly interfaces 50 Ω twisted-pair wiring; 3.4 ns tpd ensures sub-microsecond sampling fidelity. |
| Automated Test Equipment (ATE) Channel Sync | Medical Imaging Data Acquisition |
Use Scenario: Synchronizing parallel stimulus/response vectors across multiple test channels in high-pin-count ATE systems. IC Role / Device Role / Timing Role: Dual-bank flip-flop capturing per-channel measurement results under independent clock domains for time-stamped correlation. Use Value: Independent 1OE/2OE allows selective channel readout without disturbing ongoing acquisition on other banks. |
Use Scenario: Buffering raw pixel data streams from multi-sensor imaging arrays prior to FPGA-based preprocessing in portable ultrasound devices. IC Role / Device Role / Timing Role: Low-noise 16-bit latch isolating analog front-end from digital processing stage; operates at 1.8 V to minimize power consumption. Use Value: 1.2 V–3.6 V supply range enables direct interface with low-voltage image sensors; bus hold suppresses noise-induced bit errors during idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit edge-triggered D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVTH16374GR | TI part with higher drive (±32 mA), no bus hold, requires external termination resistors | Lacks bus hold; unsuitable for systems with intermittent signal sources or hot-swap requirements | Select when maximum output drive and lower propagation delay (2.8 ns) outweigh need for bus hold and IOFF |
| 74LVC16374ADGG,118 | Nexperia LVC variant: same pinout, but no IOFF, lower drive (±24 mA at 3.3 V), no bus hold | Cannot safely support partial power-down; requires external pull resistors on all D inputs | Select only for cost-sensitive, single-rail 3.3 V designs where bus hold and IOFF are not required |
Compared with SN74ALVTH16374GR and 74LVC16374ADGG,118, the 74ALVCH16374DGG,51 uniquely combines bus hold, IOFF, and industrial temperature range in a single TSSOP48 package-making it the only option for robust, maintenance-free latching in mixed-voltage, hot-swap-capable systems.
Availability
74ALVCH16374DGG,51 is available at Aetrix Electronics and suitable for telecom backplane interfaces, industrial PLC I/O modules, automated test equipment channel synchronization, and medical imaging data acquisition requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74ALVCH16374DGG,51 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, and energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer applications.
The 74ALVCH series targets high-speed, low-power, mixed-voltage digital interfacing-designed specifically for robust data latching in industrial automation, telecom infrastructure, and test equipment where bus integrity and power sequencing reliability are critical.
FAQ
What is the minimum supply voltage for guaranteed operation of the 74ALVCH16374DGG,51?
The device is fully specified from 1.2 V to 3.6 V. At 1.2 V, static parameters including VIH/VIL and VOL/VOH remain valid, and dynamic performance supports up to 125 MHz operation. All timing and drive specifications in the datasheet apply across this full range without derating.
How does the bus hold circuit function, and what design benefit does it provide?
The bus hold circuit actively maintains the last valid logic state on each D-input using weak feedback transistors. It draws ±75 μA typical at 3.0 V and eliminates the need for external pull-up or pull-down resistors-reducing component count, board area, and potential noise coupling in high-density layouts.
Can the two 8-bit banks operate with different supply voltages?
No. The device has a single VCC pin domain (four bonded VCC pins tied internally). Both banks share the same supply rail and must operate at identical voltage levels. Mixed-supply operation is not supported; use separate devices for truly independent voltage domains.
What is the purpose of the IOFF feature, and under what conditions does it activate?
IOFF activates automatically when VCC drops below ~0.8 V, disabling all outputs to prevent reverse current flow from powered downstream circuits into the unpowered IC. This protects against latch-up and damage during partial power-down sequences in multi-rail systems, without requiring external control signals.
74ALVCH16374DGG,51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVCH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Clock Frequency:
- 350 MHz
- Max Propagation Delay @ V, Max CL:
- 3.4ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Current - Quiescent (Iq):
- 40 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74ALVCH16374DGG,51 FAQ
1.How can I place an order for 74ALVCH16374DGG,51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16374DGG,51 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 74ALVCH16374DGG,51 reliable?
The price and inventory of 74ALVCH16374DGG,51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16374DGG,51 is usually 5 days.
3.What payment methods are accepted for 74ALVCH16374DGG,51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16374DGG,51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVCH16374DGG,51?
74ALVCH16374DGG,51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16374DGG,51 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 74ALVCH16374DGG,51?
For technical support, including 74ALVCH16374DGG,51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16374DGG,51 requirements.
6.How does Aetrix verify that 74ALVCH16374DGG,51 is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16374DGG,51 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 74ALVCH16374DGG,51 meets industry standards.
7.What is the process for return or replacement of 74ALVCH16374DGG,51?
All 74ALVCH16374DGG,51 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16374DGG,51, 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 74ALVCH16374DGG,51 part is unused and in its original packaging.
Return procedure for 74ALVCH16374DGG,51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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