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Texas Instruments SN74LVTH16374ZRDR
- Part No.:
- SN74LVTH16374ZRDR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 54-TFBGA
- Datasheet:
-
SN74LVTH16374ZRDR.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 54BGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
SN74LVTH16374ZRDR from Texas Instruments is a 3.3-V ABT 16-bit edge-triggered D-type flip-flop with 3-state outputs in a 54-ball ZRD (VFBGA, Pb-free) package. It features dual 8-bit sections with independent clock and output-enable controls, bus-hold on all data inputs, Ioff support for hot insertion, and operates down to 2.7 V supply-enabling robust bidirectional bus interfacing between 3.3-V logic and 5-V systems.
For engineers reviewing the SN74LVTH16374ZRDR datasheet, SN74LVTH16374ZRDR pinout, SN74LVTH16374ZRDR application, or SN74LVTH16374ZRDR equivalent, this device is selected for high-speed data latching in mixed-voltage industrial backplanes, memory interface buffers requiring low ground bounce (<0.8 V), and hot-pluggable I/O expansion modules where power-up 3-state and Ioff protection are mandatory.
Technical Context
The SN74LVTH16374ZRDR implements two independent 8-bit D-type flip-flop banks, each with separate positive-edge-triggered clocks (1CLK, 2CLK) and active-low 3-state output enables (1OE, 2OE). Its Advanced BiCMOS Technology (ABT) delivers TTL-compatible drive strength (±64 mA) at 3.3-V VCC while accepting 5-V-tolerant inputs.
Bus-hold circuitry eliminates external pullup/pulldown resistors on all 16 data inputs; distributed VCC/GND pins and flow-through pin architecture minimize switching noise and optimize PCB layout. The device enters high-impedance state during power-up/down when VCC is below 1.5 V, and supports unregulated battery operation from 2.7 V to 3.6 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 2.7 V to 3.6 V - supports unregulated battery rails and ensures stable operation across industrial voltage variation. |
| Input Voltage Tolerance | Up to 5.5 V - enables direct connection to 5-V legacy buses without level shifters. |
| Output Drive Strength | IOL = 64 mA / IOH = –32 mA - drives heavy capacitive loads and long traces in backplane applications. |
| Max Clock Frequency | 160 MHz at VCC = 3.3 V - suitable for high-speed data capture in memory and interface buffers. |
| Propagation Delay (tPLH/tPHL) | 1.4 ns to 5.6 ns - ensures tight timing margins in synchronous 100+ MHz systems. |
| Ground Bounce (VOLP) | <0.8 V at VCC = 3.3 V - reduces signal integrity risk in dense multi-channel latching. |
| Bus-Hold Current | ±750 μA max - actively maintains valid logic states on floating inputs, removing need for external biasing. |
Pinout & Package
SN74LVTH16374ZRDR uses a 54-ball ZRD package (VFBGA, 5.5 mm × 5.5 mm, 0.5-mm pitch), RoHS-compliant and moisture-sensitivity Level-1 rated. Pin assignments follow JEDEC-standard top-view orientation with ball A1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | 1Q1 | Output of first flip-flop in Bank 1 - directly connects to data bus segment 1. |
| A3 | 1OE | Active-low output enable for Bank 1 - asserts high-impedance on Q1–Q8 when high. |
| A4 | 1CLK | Positive-edge clock for Bank 1 - triggers simultaneous latching of D1–D8 into Q1–Q8. |
| A6 | 1D1 | Data input for first flip-flop in Bank 1 - accepts 5-V-tolerant signals with bus-hold active. |
| B1 | 1Q3 | Output of third flip-flop in Bank 1 - part of flow-through layout minimizing trace crossovers. |
| B2 | 1Q2 | Output of second flip-flop in Bank 1 - adjacent to 1Q1 for matched-length routing. |
| C1 | 1Q5 | Output of fifth flip-flop in Bank 1 - shares VCC pair (C3/C4) to reduce simultaneous switching noise. |
| D1 | 1Q7 | Output of seventh flip-flop in Bank 1 - positioned near GND pairs (D3/D4) for low-inductance return path. |
| E1 | 2Q1 | Output of first flip-flop in Bank 2 - electrically isolated from Bank 1 for independent control. |
| E2 | 1Q8 | Output of eighth flip-flop in Bank 1 - shares ball row with 2Q1 to support interleaved bus routing. |
| F1 | 2Q3 | Output of third flip-flop in Bank 2 - mirrors Bank 1 layout for consistent PCB design reuse. |
| G1 | 2Q5 | Output of fifth flip-flop in Bank 2 - supplied by dedicated VCC pair (G3/G4) for rail stability. |
| H1 | 2Q7 | Output of seventh flip-flop in Bank 2 - placed adjacent to GND balls (H3/H4) for EMI reduction. |
| J1 | 2Q8 | Output of eighth flip-flop in Bank 2 - paired with 2OE (J3) and 2CLK (J6) for compact control grouping. |
| J3 | 2OE | Active-low output enable for Bank 2 - decouples Bank 2 outputs independently from Bank 1. |
| J6 | 2CLK | Positive-edge clock for Bank 2 - allows asynchronous latching of two 8-bit data streams. |
| K1 | 2D1 | Data input for first flip-flop in Bank 2 - identical electrical specs to 1D1, enabling mirrored system design. |
Key Features
| Feature | Design Value |
|---|---|
| Bus-Hold Inputs | Eliminates external pullup/pulldown resistors on all 16 data lines - reduces BOM count and board area in space-constrained modules. |
| Ioff Protection | Disables outputs when VCC = 0 V - prevents current backflow during hot insertion into live backplanes. |
| Power-Up 3-State | Outputs remain high-impedance until VCC exceeds 1.5 V - avoids bus contention during power sequencing. |
| Distributed Power Pins | VCC and GND placed across multiple rows/columns - lowers simultaneous switching noise and improves signal integrity at 160 MHz. |
| Flow-Through Architecture | Input and output balls arranged linearly (e.g., D1→Q1, D2→Q2) - simplifies layer stack routing and minimizes trace skew. |
| Mixed-Mode Operation | 3.3-V VCC with 5-V input/output tolerance - bridges legacy 5-V peripherals and modern low-voltage controllers without translators. |
Applications
| Industrial Backplane Interface | Memory Buffer Module |
|---|---|
Use Scenario: Latching address/data signals between a 3.3-V FPGA controller and 5-V legacy peripheral cards in modular PLC racks. IC Role / Device Role / Timing Role: Dual 8-bit edge-triggered latch synchronizing parallel bus transfers on rising CLK edges, with independent OE control per bank for read/write direction management. Use Value: Enables direct 5-V/3.3-V interoperability without level shifters; bus-hold prevents floating inputs during card insertion/removal. |
Use Scenario: Holding write data in DDR SDRAM interface buffers where timing-critical setup/hold margins must be preserved across voltage domains. IC Role / Device Role / Timing Role: High-speed D-type flip-flop capturing incoming data on CLK↑ with 2.9 ns setup time (VCC = 3.3 V), driving memory bus with 64 mA sink capability. Use Value: Meets tight 160 MHz clock frequency requirement while maintaining sub-1 ns propagation skew across all 16 bits. |
| Hot-Pluggable I/O Expansion | Automated Test Equipment (ATE) Fixture |
Use Scenario: Isolating control signals in modular I/O carrier boards that accept field-replaceable daughter cards under live power. IC Role / Device Role / Timing Role: 3-state output buffer with Ioff and power-up 3-state ensuring zero current injection and no bus conflict during card insertion. Use Value: Eliminates need for mechanical interlocks or sequenced power supplies - reduces system complexity and failure points. |
Use Scenario: Capturing parallel stimulus/response vectors in high-pin-count ATE fixtures interfacing with 3.3-V ASICs and 5-V instrumentation. IC Role / Device Role / Timing Role: Precision edge-triggered register providing deterministic sampling of test signals with <0.8 V ground bounce to preserve measurement accuracy. Use Value: Maintains signal fidelity across 16 channels simultaneously - critical for pass/fail binning of high-speed digital devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit latch/register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16374DGGR | Lower drive (±24 mA), no bus-hold, 1.65–3.6 V VCC range - lacks 5-V input tolerance and hot-insertion features. | Suitable only for pure 3.3-V systems without legacy interface needs or hot-swap requirements. | Select when cost sensitivity outweighs mixed-voltage and reliability requirements. |
| SN74ALVCH16374DLR | Higher speed (200 MHz fmax), 2.3–3.6 V VCC, no Ioff - improved timing but incompatible with sub-2.3 V battery operation and hot insertion. | Better for high-frequency test equipment; unsuitable for unregulated battery or live-backplane use cases. | Choose when maximum clock rate is critical and power sequencing is fully controlled. |
Compared with SN74LVC16374DGGR and SN74ALVCH16374DLR, the SN74LVTH16374ZRDR uniquely combines 5-V input tolerance, Ioff-enabled hot insertion, bus-hold, and 2.7-V minimum operation - making it the only option qualified for ruggedized industrial backplane and modular I/O designs.
Availability
SN74LVTH16374ZRDR is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory buffer modules, and hot-pluggable I/O expansion requiring stable component supply across extended temperature ranges (–40°C to 85°C) and long production lifecycles.
Supply support for SN74LVTH16374ZRDR 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, with decades of expertise in high-reliability interface and timing ICs.
The SN74LVTH16374ZRDR belongs to TI's Widebus™ family of advanced 3.3-V ABT logic devices, engineered specifically for mixed-voltage system interfacing, hot-plug resilience, and noise-immune data latching in industrial and communications infrastructure.
FAQ
What is the operating temperature range for the SN74LVTH16374ZRDR?
The SN74LVTH16374ZRDR is specified for operation from –40°C to +85°C, matching commercial/industrial ambient requirements. This range is validated per TI's recommended operating conditions and applies to all electrical and timing parameters in the datasheet, including 160 MHz maximum clock frequency and 64 mA output drive.
Does the SN74LVTH16374ZRDR support hot insertion, and how is it implemented?
Yes, the SN74LVTH16374ZRDR supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0 V to prevent damaging current backflow, and power-up 3-state holds outputs in high-impedance until VCC exceeds 1.5 V. Both functions are inherent to the ABT process and require no external components.
Can the SN74LVTH16374ZRDR be used with a 5-V microcontroller driving its inputs?
Yes - all data and control inputs (D1–D16, CLK, OE) are 5-V tolerant up to 5.5 V, even when VCC = 3.3 V. This allows direct connection to 5-V microcontrollers without level-shifting circuitry, while maintaining full 3.3-V output swing and drive strength on the Q outputs.
What is the purpose of bus-hold circuitry on the SN74LVTH16374ZRDR, and does it replace pullup resistors?
The bus-hold circuitry on the SN74LVTH16374ZRDR actively maintains the last-valid logic state on unused or undriven inputs using ±750 μA dynamic current. It fully replaces external pullup/pulldown resistors - adding them would cause contention and is explicitly discouraged in the datasheet.
How does the ZRD package of the SN74LVTH16374ZRDR differ from the DGG or DL packages listed in the datasheet?
The SN74LVTH16374ZRDR uses a 54-ball ZRD (VFBGA) package - smaller footprint (5.5 mm × 5.5 mm) and finer pitch (0.5 mm) than the 48-pin DGG (TSSOP) or DL (SSOP) variants. It is Pb-free, moisture-sensitivity Level-1 rated, and optimized for high-density PCB layouts where space and thermal performance are critical.
SN74LVTH16374ZRDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 54-TFBGA
- 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:
- 160 MHz
- Max Propagation Delay @ V, Max CL:
- 4.5ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Current - Quiescent (Iq):
- 190 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 54-BGA Microstar Junior (8x5.5)
SN74LVTH16374ZRDR FAQ
1.How can I place an order for SN74LVTH16374ZRDR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH16374ZRDR 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 SN74LVTH16374ZRDR reliable?
The price and inventory of SN74LVTH16374ZRDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16374ZRDR is usually 5 days.
3.What payment methods are accepted for SN74LVTH16374ZRDR?
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4.How is shipping managed for SN74LVTH16374ZRDR?
SN74LVTH16374ZRDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTH16374ZRDR 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 SN74LVTH16374ZRDR?
For technical support, including SN74LVTH16374ZRDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16374ZRDR requirements.
6.How does Aetrix verify that SN74LVTH16374ZRDR is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16374ZRDR 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 SN74LVTH16374ZRDR meets industry standards.
7.What is the process for return or replacement of SN74LVTH16374ZRDR?
All SN74LVTH16374ZRDR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16374ZRDR, 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 SN74LVTH16374ZRDR part is unused and in its original packaging.
Return procedure for SN74LVTH16374ZRDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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