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Texas Instruments SN74ALVTH16374GR
- Part No.:
- SN74ALVTH16374GR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74ALVTH16374GR.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,166
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Product details
Overview
SN74ALVTH16374GR from Texas Instruments is a 2.5-V/3.3-V 16-bit edge-triggered D-type flip-flop with 3-state outputs, designed for bidirectional bus interfacing in mixed-voltage systems. It features dual 8-bit sections, bus-hold on all data inputs, auto-3-state output disable above VCC + 0.5 V, and operates from –40°C to 85°C. Used in I/O port expansion and buffer register applications within industrial control backplanes.
For engineers reviewing the SN74ALVTH16374GR datasheet, SN74ALVTH16374GR pinout, SN74ALVTH16374GR application, or SN74ALVTH16374GR equivalent, key selection criteria include 3.3-V drive capability (–32/64 mA), low ground bounce (<0.8 V at 3.3 V), flow-through pinout for PCB routing, and live-insertion support via power-off output disable.
Technical Context
This device implements two independent 8-bit positive-edge-triggered D-type flip-flop sections, each with dedicated clock (CLK) and output-enable (OE) controls. All 16 data inputs include integrated bus-hold circuitry, eliminating external pullup/pulldown resistors and preventing floating states.
Its ABT (Advanced BiCMOS Technology) architecture enables TTL-level 5-V input compatibility while operating from 2.3 V to 3.6 V VCC, supporting mixed-mode signal environments. Distributed VCC/GND pins and flow-through layout minimize high-speed switching noise and simplify board design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - supports both 2.5-V and 3.3-V system rails with 5-V tolerant inputs |
| Output Drive | –32 mA / +64 mA at 3.3 V - drives heavy capacitive loads and long traces without external buffers |
| Max Clock Frequency | 250 MHz at 3.3 V - enables high-speed data latching in memory interfaces and FPGA I/O bridging |
| Propagation Delay | 1.0 ns (tPLH/tPHL min) at 3.3 V - ensures tight timing margins in synchronous bus designs |
| Bus-Hold Current | ±75 µA at 3 V - actively holds unused inputs at valid logic levels without external components |
| Power-Up State | High-impedance outputs when VCC < 1.2 V - prevents bus contention during power sequencing |
| ESD Rating | 2000 V HBM - meets MIL-STD-883 requirement for robust handling in manufacturing and field service |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm max height, JEDEC MO-153 compliant, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output enable (active-low) | Independent control of each 8-bit section's 3-state outputs; no effect on internal latch operation |
| 1CLK, 2CLK | Clock input (positive edge) | Edge-triggered sampling of D inputs; asynchronous reset not supported |
| 1D1–1D8, 2D1–2D8 | Data inputs | All feature integrated bus-hold; tolerate 0–5.5 V input range regardless of VCC |
| 1Q1–1Q8, 2Q1–2Q8 | Registered outputs | 3-state capable; auto-disable when VO > VCC + 0.5 V eliminates need for external OE logic |
| VCC (Pins 13, 14, 27, 28, 39, 40) | Supply | Distributed power pins reduce simultaneous switching noise and improve signal integrity |
| GND (Pins 7, 8, 20, 21, 32, 33) | Ground | Multiple low-inductance return paths enhance high-frequency stability and EMI performance |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-voltage interface | 5-V tolerant inputs with 2.3–3.6 V VCC operation enables direct connection to legacy TTL buses |
| Live insertion support | Outputs disable automatically when VCC = 0, allowing hot-swap into powered backplanes without bus conflict |
| Auto-3-state protection | Outputs enter high-Z when VO exceeds VCC + 0.5 V - prevents damage during overvoltage transients or level-shifter faults |
| Flow-through pinout | Input-to-output signal path runs linearly across package - minimizes trace crossovers and layer count in dense PCB layouts |
| Bus-hold integration | Eliminates 16 external pullup/pulldown resistors, reducing BOM cost and board area while improving reliability |
Applications
| Industrial Backplane I/O Expansion | FPGA-to-ASIC Data Interface |
|---|---|
Use Scenario: Adding isolated, voltage-translating I/O ports to a modular PLC rack with 5-V legacy modules and 3.3-V controller FPGA. IC Role / Device Role / Timing Role: Bidirectional data register buffering clocked by FPGA-controlled CLK/OE signals; provides level-shifted handshake between domains. Use Value: Enables direct 5-V ↔ 3.3-V communication without discrete level shifters or external bus-hold resistors, reducing component count by ≥18 parts per module. |
Use Scenario: Synchronizing parallel data transfers between a Xilinx Artix-7 FPGA and a custom ASIC with strict setup/hold timing and 5-V-tolerant control lines. IC Role / Device Role / Timing Role: Edge-triggered latch aligning asynchronous peripheral data to FPGA clock domain; bus-hold prevents metastability on unconnected data lines. Use Value: Guarantees 1.1 ns minimum setup time at 3.3 V, meeting FPGA I/O timing closure requirements while tolerating 5-V control signals from ASIC peripherals. |
| Memory-Mapped Peripheral Bridge | Test Equipment Digital Pattern Generator |
Use Scenario: Interfacing an ARM Cortex-M7 microcontroller's 3.3-V parallel bus to legacy 5-V SRAM and EEPROM devices in embedded instrumentation. IC Role / Device Role / Timing Role: Registered bus driver providing direction-controlled data flow; OE synchronized to memory read/write strobes. Use Value: Delivers 64 mA sink current to drive 5-V memory address/data buses, eliminating need for discrete MOSFET translators and simplifying timing analysis. |
Use Scenario: Generating precise, glitch-free digital stimulus waveforms in automated test equipment requiring deterministic output enable timing and low ground bounce. IC Role / Device Role / Timing Role: High-speed pattern register with sub-2 ns propagation delay and <0.8 V VOLP - critical for clean waveform edges at 250 MHz. Use Value: Reduces measurement uncertainty caused by output switching noise, enabling accurate validation of high-speed receiver eye diagrams and jitter tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit registered bus interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16374ADGGR | No bus-hold; 3.3-V only (no 5-V input tolerance); lower drive (–24/24 mA) | Suitable only in pure 3.3-V systems with externally terminated buses | Select when cost sensitivity outweighs mixed-voltage flexibility and external termination is acceptable |
| SN74AVC16T245DGGR | Direction-controlled level translator (not edge-triggered register); no clock or latch function | Used for continuous bidirectional voltage translation, not synchronous data capture | Choose only when application requires real-time level shifting without storage - not a functional replacement |
Compared with SN74LVC16374ADGGR and SN74AVC16T245DGGR, the SN74ALVTH16374GR uniquely combines 5-V input tolerance, integrated bus-hold, and 64-mA sink drive in a single 16-bit registered interface - making it irreplaceable in mixed-voltage, high-noise industrial backplane designs where deterministic timing and robustness are mandatory.
Availability
SN74ALVTH16374GR is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded computing applications requiring stable component supply and long-term obsolescence management.
Supply support for SN74ALVTH16374GR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74ALVTH16374GR belongs to TI's ALVTH advanced logic family, engineered specifically for high-speed, mixed-voltage bus interfacing in noise-sensitive industrial and instrumentation systems.
FAQ
What is the maximum clock frequency supported by the SN74ALVTH16374GR?
The SN74ALVTH16374GR supports up to 250 MHz at VCC = 3.3 V ± 0.3 V under recommended operating conditions with CL = 50 pF. At 2.5 V, maximum frequency drops to 150 MHz. These values are measured with defined load and transition rates per TI's SCES068G datasheet Figure 2 timing test conditions.
Does the SN74ALVTH16374GR require external pullup or pulldown resistors on its data inputs?
No. The SN74ALVTH16374GR integrates bus-hold circuitry on all 16 data inputs, actively maintaining valid logic levels when inputs float. This eliminates the need for external pullup/pulldown resistors, reducing BOM count and PCB area while improving reliability in noisy environments.
Can the SN74ALVTH16374GR safely interface between a 5-V microcontroller and a 3.3-V FPGA?
Yes. The SN74ALVTH16374GR accepts 5-V input signals across its full VI range (0–5.5 V) while operating from a 3.3-V VCC supply. Its 5-V tolerant inputs and 3.3-V compatible outputs make it ideal for bidirectional level translation in mixed-voltage systems like MCU–FPGA interfaces.
What happens to the outputs of the SN74ALVTH16374GR during power-up or power-down?
When VCC falls below 1.2 V, the SN74ALVTH16374GR automatically places all outputs in high-impedance state - preventing bus contention during power sequencing. For guaranteed high-Z above 1.2 V, tie OE to VCC via a pullup resistor (value determined by driver sink capability).
Is the SN74ALVTH16374GR pin-compatible with other 16-bit flip-flops in TI's portfolio?
The SN74ALVTH16374GR uses the TSSOP-48 (DGG) package with a flow-through pinout optimized for PCB layout. It is not pin-compatible with SN74LVC16374A (same pin count but different pin mapping) or SN74AVC16T245 (different function and signal assignment). Always verify pin functions using the official TI datasheet schematic.
SN74ALVTH16374GR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVTH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 250 MHz
- Max Propagation Delay @ V, Max CL:
- 3.2ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 8mA, 24mA; 32mA, 64mA
- Voltage - Supply:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Current - Quiescent (Iq):
- 100 µA
- Input Capacitance:
- 3.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74ALVTH16374GR FAQ
1.How can I place an order for SN74ALVTH16374GR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVTH16374GR 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 SN74ALVTH16374GR reliable?
The price and inventory of SN74ALVTH16374GR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVTH16374GR is usually 5 days.
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Once your SN74ALVTH16374GR 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 SN74ALVTH16374GR?
For technical support, including SN74ALVTH16374GR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVTH16374GR requirements.
6.How does Aetrix verify that SN74ALVTH16374GR is sourced from the original manufacturer or authorized distributors?
All SN74ALVTH16374GR 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 SN74ALVTH16374GR meets industry standards.
7.What is the process for return or replacement of SN74ALVTH16374GR?
All SN74ALVTH16374GR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVTH16374GR, 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 SN74ALVTH16374GR part is unused and in its original packaging.
Return procedure for SN74ALVTH16374GR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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