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Texas Instruments SN74ALVTH16374VR
- Part No.:
- SN74ALVTH16374VR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ALVTH16374VR.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,381
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Product details
Overview
SN74ALVTH16374VR 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 detection, and operates from –40°C to 85°C. It is used in high-speed I/O port buffering and TTL-to-CMOS level translation in industrial control backplanes.
For engineers reviewing the SN74ALVTH16374VR datasheet, SN74ALVTH16374VR pinout, SN74ALVTH16374VR application, or SN74ALVTH16374VR equivalent, key selection criteria include 3.3-V drive strength (–32/64 mA), 250-MHz max clock frequency at VCC = 3.3 V, bus-hold input stabilization, and TVSOP (DGV) 48-pin package compatibility with fine-pitch PCB layouts.
Technical Context
This device implements two independent 8-bit positive-edge-triggered D-type flip-flop sections, each with dedicated output-enable (OE) control and shared clock (CLK). Its Advanced BiCMOS Technology (ABT) enables simultaneous 2.5-V/3.3-V operation while accepting 5-V-tolerant inputs - critical for legacy TTL interface bridging.
The flow-through pin architecture minimizes signal crosstalk, and distributed VCC/GND pins reduce high-speed switching noise. Bus-hold circuitry eliminates external pullup/pulldown resistors on data lines, and auto-3-state disables outputs when VO exceeds VCC + 0.5 V - preventing bus contention during hot-swap events.
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 input tolerance |
| Max Clock Frequency | 250 MHz at VCC = 3.3 V - enables high-throughput data latching in fast peripheral interfaces |
| Output Drive | –32 mA / +64 mA at VCC = 3.3 V - drives heavily loaded parallel buses without external buffers |
| Setup/Hold Times | tsu = 1.0 ns, th = 0.5 ns (data high, VCC = 3.3 V) - accommodates tight timing margins in synchronous designs |
| Propagation Delay | tPLH/tPHL ≤ 3.2 ns (CL = 50 pF, VCC = 3.3 V) - ensures deterministic inter-stage timing in pipeline registers |
| Bus-Hold Current | IBHL = 75 µA, IBHH = –75 µA at VCC = 3 V - actively holds floating inputs at valid logic levels without external components |
| Power-Up State | High-impedance outputs when VCC ≤ 1.2 V - prevents bus conflicts during power sequencing |
Pinout & Package
SN74ALVTH16374VR is housed in a 48-pin Thin Very Small-Outline Package (TVSOP, DGV), 3.6 mm × 9.7 mm body, 1.2 mm max height, 0.4 mm lead pitch, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output-enable control (active-low) | Independent enable for each 8-bit section; does not affect internal latch state |
| 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 | 3-state outputs | Auto-3-state activates when VO > VCC + 0.5 V; sink/source up to 64 mA |
| VCC (Pins 13, 25, 36, 48) | Supply voltage | Distributed power pins minimize simultaneous switching noise across 16-bit bus |
| GND (Pins 12, 14, 24, 26, 35, 37, 47) | Ground reference | Seven ground pins provide low-inductance return paths for high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5-V-tolerant inputs with 2.3–3.6-V VCC enables direct connection to legacy TTL buses without level shifters |
| Auto-3-state output protection | Outputs automatically enter high-Z when VO exceeds VCC + 0.5 V - prevents damage during overvoltage transients |
| Live insertion support | Outputs disable during power-off (VCC = 0); permits hot-plug capability in modular backplane systems |
| Flow-through pinout | Input-to-output signal path runs linearly across package - simplifies layer routing and reduces trace skew |
| Bus-hold on all data inputs | Eliminates need for external 10-kΩ pullup/down resistors on unused or unterminated data lines |
Applications
| Industrial Backplane I/O Buffering | Embedded Controller Peripheral Interface |
|---|---|
Use Scenario: Isolating and latching parallel data between a 3.3-V microcontroller and legacy 5-V industrial I/O modules. IC Role / Device Role / Timing Role: Acts as a 16-bit bidirectional bus register with independent OE control per byte, synchronized to controller clock. Use Value: Enables seamless voltage translation without external level shifters while maintaining 250-MHz timing integrity. | Use Scenario: Expanding GPIO count on an ARM-based HMI controller via parallel expansion bus. IC Role / Device Role / Timing Role: Functions as a double 8-bit output latch, holding display segment or LED driver data until next update cycle. Use Value: Provides high-drive (64 mA) outputs capable of directly sourcing/sinking LED loads without discrete drivers. |
| Telecom Line Card Data Capture | Automated Test Equipment (ATE) Pattern Generator |
Use Scenario: Capturing parallel status signals from multiple line cards in a telecom shelf using a centralized FPGA. IC Role / Device Role / Timing Role: Serves as a 16-bit edge-triggered input register, capturing synchronized alarm/status bits on rising CLK edge. Use Value: Bus-hold inputs prevent metastability on unterminated backplane stubs; low propagation delay (<3.2 ns) preserves setup/hold margins. | Use Scenario: Generating precise, repeatable 16-bit stimulus patterns for IC functional testing. IC Role / Device Role / Timing Role: Configured as a 16-bit pattern register, clocked by ATE timing generator to deliver deterministic test vectors. Use Value: Auto-3-state prevents bus contention when multiple pattern sources share a common test bus; 250-MHz clock support matches high-speed ATE rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16374VR | No bus-hold; lower drive (–24/24 mA at 3.3 V); no 5-V input tolerance | Suitable only in fully 3.3-V systems with terminated buses and external pullups | Select when cost reduction is prioritized over mixed-voltage robustness and bus stability |
| SN74LVC16374ADGGR | 3.3-V only (no 5-V tolerance); no auto-3-state; higher ICC (5 mA typical) | Requires external level shifters for TTL interfaces; lacks live-insertion safety | Prefer for new 3.3-V-only designs where TI ABT process advantages are unnecessary |
Compared with SN74ALVTH16374VR, SN74ALVCH16374VR sacrifices bus-hold and 5-V tolerance for lower static current, while SN74LVC16374ADGGR trades ABT noise immunity and auto-3-state for broader LVC family compatibility - making SN74ALVTH16374VR uniquely suited for legacy-system integration.
Availability
SN74ALVTH16374VR is available at Aetrix Electronics and suitable for industrial backplane I/O buffering, embedded controller peripheral interfacing, and telecom line card data capture requiring stable component supply across extended temperature ranges.
Supply support for SN74ALVTH16374VR 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 innovation in high-speed interface and bus technology.
The SN74ALVTH16374VR belongs to TI's ALVTH advanced logic family, engineered specifically for robust mixed-voltage system interfacing - combining high drive, bus stability, and hot-swap safety in space-constrained packages.
FAQ
What is the maximum clock frequency supported by SN74ALVTH16374VR?
SN74ALVTH16374VR supports a maximum clock frequency of 250 MHz when operated at VCC = 3.3 V with CL = 50 pF. At VCC = 2.5 V, the maximum frequency is 150 MHz. These values are specified under recommended operating conditions and assume proper signal integrity and load matching - exceeding them may result in setup/hold violations or metastability.
Does SN74ALVTH16374VR require external pullup or pulldown resistors on its data inputs?
No, SN74ALVTH16374VR does not require external pullup or pulldown resistors because it integrates bus-hold circuitry on all data inputs (1D1–1D8 and 2D1–2D8). This feature actively maintains valid logic levels on floating or unterminated inputs, eliminating the need for discrete resistors and reducing BOM count and board area.
Can SN74ALVTH16374VR interface directly with 5-V TTL logic?
Yes, SN74ALVTH16374VR supports direct interface with 5-V TTL logic: its inputs tolerate voltages up to 5.5 V regardless of VCC (2.3–3.6 V), and its outputs swing rail-to-rail within the VCC range. This allows seamless connection to legacy 5-V systems without external level-shifting components - a core design objective of the ALVTH family.
What happens to the outputs of SN74ALVTH16374VR during power-up or power-down?
During power-up or power-down, when VCC drops below or rises through 1.2 V, SN74ALVTH16374VR automatically places all outputs in a high-impedance state. This prevents bus conflicts and unintended driving during supply ramping. For guaranteed high-Z above 1.2 V, OE should be tied to VCC via a pullup resistor - minimum value determined by driver sink capability.
Is SN74ALVTH16374VR pin-compatible with other 48-pin 16-bit flip-flops like SN74ALVCH16374VR?
Yes, SN74ALVTH16374VR is pin-compatible with SN74ALVCH16374VR in the same TVSOP (DGV) 48-pin package: identical pin count, function mapping, and mechanical footprint. However, electrical behavior differs - SN74ALVTH16374VR adds bus-hold, 5-V input tolerance, and auto-3-state, so direct substitution requires validation of these features in the target application.
SN74ALVTH16374VR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVTH
- Package/Case:
- 48-TFSOP (0.173", 4.40mm 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-TVSOP
SN74ALVTH16374VR FAQ
1.How can I place an order for SN74ALVTH16374VR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALVTH16374VR 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 SN74ALVTH16374VR reliable?
The price and inventory of SN74ALVTH16374VR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVTH16374VR is usually 5 days.
3.What payment methods are accepted for SN74ALVTH16374VR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALVTH16374VR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ALVTH16374VR?
SN74ALVTH16374VR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ALVTH16374VR 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 SN74ALVTH16374VR?
For technical support, including SN74ALVTH16374VR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVTH16374VR requirements.
6.How does Aetrix verify that SN74ALVTH16374VR is sourced from the original manufacturer or authorized distributors?
All SN74ALVTH16374VR 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 SN74ALVTH16374VR meets industry standards.
7.What is the process for return or replacement of SN74ALVTH16374VR?
All SN74ALVTH16374VR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVTH16374VR, 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 SN74ALVTH16374VR part is unused and in its original packaging.
Return procedure for SN74ALVTH16374VR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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