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Home > Products > Integrated Circuits (ICs) > Logic > Flip Flops

Texas Instruments SN74LVC16374DLR

Name: SN74LVC16374DLR
Brand: Texas Instruments
SKU: SN74LVC16374DLR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVC16374DLR

Manufacturer:: Texas Instruments

Category:: Flip Flops

Package:: 48-BSSOP (0.295", 7.50mm Width)

Datasheet:: SN74LVC16374DLR.pdf

Description:: IC FF D-TYPE DUAL 8BIT 48SSOP

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Product details

Overview

SN74LVC16374DLR from Texas Instruments is a 16-bit edge-triggered D-type flip-flop with 3-state outputs, designed for 2.7-V to 3.6-V V_CC operation. It functions as two independent 8-bit registers or one unified 16-bit register, features bus-hold on all data inputs, and supports high-speed clocking up to 100 MHz at 3.3 V - ideal for bidirectional bus driving and I/O port buffering in industrial control backplanes.

For engineers reviewing the SN74LVC16374DLR datasheet, SN74LVC16374DLR pinout, SN74LVC16374DLR application, or SN74LVC16374DLR equivalent, key selection criteria include its dual 8-bit 3-state output architecture, guaranteed –40°C to 85°C operation, low ground bounce (<0.8 V), and compatibility with LVTTL/CMOS logic levels across 2.7–3.6 V supply range.

Technical Context

This device implements two independent 8-bit positive-edge-triggered D-type flip-flop sections, each with dedicated clock (CLK), output-enable (OE), and 8-bit data (D) and output (Q) buses. Internal bus-hold circuitry eliminates external pullup/pulldown resistors on all 16 data inputs.

Outputs enter high-impedance state when OE is high, independent of clock or data activity - enabling live bus contention management and hot-swap-safe register updates. Timing parameters are fully characterized from –40°C to 85°C, with t_su = 2 ns and t_h = 1.5 ns at V_CC = 3.3 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - ensures interoperability with 3.3-V systems and tolerance against rail droop in dense PCB layouts.
Max Clock Frequency	100 MHz at V_CC = 3.3 V - supports high-throughput data latching in memory interfaces and synchronous bus controllers.
t_su/t_h	2 ns setup / 1.5 ns hold - enables reliable capture of fast data streams without added timing margin overhead.
I_OL/I_OH	±24 mA drive strength - provides robust fanout to multiple LVC/LVTTL loads without external buffers.
Bus-Hold Current	±75 µA at VI = 2 V - actively maintains valid logic states on unused inputs, eliminating BOM cost and layout space for pull resistors.
Power Dissipation Cap	1.2 W (DL package) - supports sustained operation in thermally constrained SSOP-48 applications without derating.
Operating Temperature	–40°C to +85°C - qualified for industrial automation, motor drives, and programmable logic controller I/O modules.

Pinout & Package

SN74LVC16374DLR uses a 48-pin Shrink Small-Outline Package (SSOP-DL) with 0.5-mm lead pitch, 12.6 mm × 6.2 mm body, and 1.2 mm max height - optimized for high-density routing and automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE	Output-enable control (active-low)	Independently disables 8-bit Q-bus sections into high-Z; no effect on internal flip-flop state retention or clocking.
1CLK, 2CLK	Positive-edge clock input	Triggers simultaneous latching of corresponding 8-bit D inputs to Q outputs on rising edge only.
1D1–1D8, 2D1–2D8	Data inputs	All 16 inputs feature integrated bus-hold; float to last valid logic level without external biasing.
1Q1–1Q8, 2Q1–2Q8	3-state outputs	Drive full LVC-compatible loads when enabled; present <1 µA leakage in high-Z mode per pin.
V_CC (Pins 7, 18, 30, 41)	Supply voltage	Four distributed V_CC pins reduce switching noise coupling and improve power integrity across wide bus.
GND (Pins 4, 11, 23, 34, 44)	Ground reference	Five GND pins provide low-inductance return paths for 16 outputs and internal logic, minimizing ground bounce.

Key Features

Feature	Design Value
Widebus™ architecture	Enables synchronized 16-bit data capture with matched propagation delays across all channels (tpd = 1.5–7.5 ns).
EPIC™ submicron CMOS process	Delivers high noise immunity (V_IL = 0.8 V, V_IH = 2.0 V) and latch-up immunity >250 mA per JEDEC JESD-17.
Output ground bounce (V_OLP)	<0.8 V at V_CC = 3.3 V - prevents false logic transitions during simultaneous output switching in multi-bit buses.
Output VOH undershoot (V_OHV)	>2.0 V at V_CC = 3.3 V - ensures clean high-level signaling even under heavy capacitive loading or fast edge rates.
3-state output enable timing	ten = 1.5–7.5 ns, tdis = 1.5–8.0 ns - enables precise bus arbitration windows for time-critical shared-data-path designs.

Applications

Industrial Backplane I/O Expansion	Programmable Logic Controller (PLC) Digital Input Module
Use Scenario: Expanding parallel I/O capacity between CPU module and field I/O cards via 16-bit data bus. IC Role / Device Role / Timing Role: Acts as a buffered, 3-state-capable register that isolates CPU bus during configuration writes and holds stable data during scan cycles. Use Value: Bus-hold eliminates need for 16 external pullups; dual OE control allows independent read/write gating of upper/lower byte lanes.	Use Scenario: Capturing 16 discrete sensor or switch inputs synchronized to PLC scan clock. IC Role / Device Role / Timing Role: Edge-triggered D-flip-flop latches real-time status on rising CLK edge; 3-state outputs interface directly to microcontroller data bus. Use Value: Guaranteed t_su/t_h margins ensure reliable capture at 100 kHz scan rates; –40°C to 85°C rating matches industrial ambient requirements.
Test Equipment Digital Pattern Generator	Automated Optical Inspection (AOI) System Data Buffer
Use Scenario: Generating deterministic 16-bit stimulus patterns for UUT (unit-under-test) digital ports. IC Role / Device Role / Timing Role: Stores pattern words from controller RAM and outputs them synchronously on CLK edges with precise timing control. Use Value: Low propagation skew (<1 ns typical) ensures simultaneous bit assertion; ±24 mA drive sustains signal integrity over 15-cm test cables.	Use Scenario: Temporarily storing high-speed image sensor pixel data before FPGA-based processing. IC Role / Device Role / Timing Role: Buffers parallel 16-bit pixel bus between sensor interface and image pipeline; OE controlled by frame-valid strobe. Use Value: High-Z outputs prevent bus contention during pixel acquisition; bus-hold maintains last valid pixel word during blanking intervals.

Industrial Backplane I/O Expansion

Programmable Logic Controller (PLC) Digital Input Module

Use Scenario: Expanding parallel I/O capacity between CPU module and field I/O cards via 16-bit data bus.

IC Role / Device Role / Timing Role: Acts as a buffered, 3-state-capable register that isolates CPU bus during configuration writes and holds stable data during scan cycles.

Use Value: Bus-hold eliminates need for 16 external pullups; dual OE control allows independent read/write gating of upper/lower byte lanes.

Use Scenario: Capturing 16 discrete sensor or switch inputs synchronized to PLC scan clock.

IC Role / Device Role / Timing Role: Edge-triggered D-flip-flop latches real-time status on rising CLK edge; 3-state outputs interface directly to microcontroller data bus.

Use Value: Guaranteed t_su/t_h margins ensure reliable capture at 100 kHz scan rates; –40°C to 85°C rating matches industrial ambient requirements.

Test Equipment Digital Pattern Generator

Automated Optical Inspection (AOI) System Data Buffer

Use Scenario: Generating deterministic 16-bit stimulus patterns for UUT (unit-under-test) digital ports.

IC Role / Device Role / Timing Role: Stores pattern words from controller RAM and outputs them synchronously on CLK edges with precise timing control.

Use Value: Low propagation skew (<1 ns typical) ensures simultaneous bit assertion; ±24 mA drive sustains signal integrity over 15-cm test cables.

Use Scenario: Temporarily storing high-speed image sensor pixel data before FPGA-based processing.

IC Role / Device Role / Timing Role: Buffers parallel 16-bit pixel bus between sensor interface and image pipeline; OE controlled by frame-valid strobe.

Use Value: High-Z outputs prevent bus contention during pixel acquisition; bus-hold maintains last valid pixel word during blanking intervals.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state D-flip-flop applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALVC16374DLR	Higher V_CC range (1.65–3.6 V); lower I_OL/I_OH (±24 mA → ±12 mA); same pinout and function.	Better suited for mixed-voltage systems with 1.8-V logic domains; reduced drive limits use in longer traces or higher capacitance loads.	Select SN74ALVC16374DLR only if 1.65–1.95 V operation is required; otherwise SN74LVC16374DLR provides superior drive and noise margin at 3.3 V.
74LVCH16374ADGG	NXP part in TSSOP-48 (DGG); includes configurable bus-hold enable/disable; identical timing and voltage specs.	Offers software-controllable bus-hold activation - useful in low-power sleep modes where input leakage must be minimized.	Choose 74LVCH16374ADGG when dynamic bus-hold control is needed; SN74LVC16374DLR is preferred for fixed-function, cost-sensitive industrial designs.

Compared with SN74ALVC16374DLR and 74LVCH16374ADGG, the SN74LVC16374DLR delivers optimal balance of 3.3-V noise immunity, 24-mA drive, and proven industrial temperature stability - making it the default choice for fixed-voltage, high-reliability bus interface applications.

Availability

SN74LVC16374DLR is available at Aetrix Electronics and suitable for industrial backplane expansion, PLC digital I/O modules, and automated test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant SSOP packaging.

Supply support for SN74LVC16374DLR 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 devices.

The SN74LVC16374DLR belongs to TI's Widebus™ family of advanced bus-interface logic, engineered specifically for noise-immune, high-speed parallel data transfer in industrial control, test instrumentation, and communications infrastructure.

FAQ

What is the maximum clock frequency supported by the SN74LVC16374DLR?

The SN74LVC16374DLR supports up to 100 MHz clock frequency when operated at V_CC = 3.3 V and T_A = 25°C. At the minimum rated V_CC of 2.7 V, the maximum clock frequency is 80 MHz. These values are guaranteed across the full –40°C to +85°C operating temperature range per TI's characterization data.

Does the SN74LVC16374DLR require external pullup or pulldown resistors on its data inputs?

No, the SN74LVC16374DLR does not require external pullup or pulldown resistors on any of its 16 data inputs because it integrates active bus-hold circuitry. This feature maintains the last valid logic state on floating inputs with ±75 µA holding current, reducing BOM count and PCB area while improving system robustness.

What package type and dimensions does the SN74LVC16374DLR use?

The SN74LVC16374DLR uses a 48-pin Shrink Small-Outline Package (SSOP-DL) measuring 12.6 mm × 6.2 mm with 0.5-mm lead pitch and 1.2 mm maximum height. It is supplied in tape-and-reel format with 1000 units per reel, and carries a JEDEC MO-153 compliant footprint.

How does the output-enable (OE) functionality work on the SN74LVC16374DLR?

The SN74LVC16374DLR has two independent active-low output-enable inputs: 1OE controls the first 8 outputs (1Q1–1Q8), and 2OE controls the second 8 (2Q1–2Q8). When OE is high, outputs enter high-impedance state without affecting internal flip-flop state or clock responsiveness - enabling safe bus sharing and hot-insertion capability.

Is the SN74LVC16374DLR compatible with 5-V logic systems?

The SN74LVC16374DLR is not 5-V tolerant: its absolute maximum V_CC is 4.6 V, and recommended operation is strictly 2.7–3.6 V. Input voltages must remain within 0–V_CC, so direct interfacing with 5-V logic requires level-shifting circuitry. It is fully compatible with 3.3-V LVTTL, LVCMOS, and mixed-signal systems.

SN74LVC16374DLR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVC

Package/Case:: 48-BSSOP (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Standard

Type:: D-Type

Output Type:: Tri-State, Non-Inverted

Number of Elements:: 2

Number of Bits per Element:: 8

Clock Frequency:: 100 MHz

Max Propagation Delay @ V, Max CL:: 7.5ns @ 3.3V, 50pF

Trigger Type:: Positive Edge

Current - Output High, Low:: 24mA, 24mA

Voltage - Supply:: 2.7V ~ 3.6V

Current - Quiescent (Iq):: 40 µA

Input Capacitance:: 3.5 pF

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-SSOP

SN74LVC16374DLR FAQ

1.How can I place an order for SN74LVC16374DLR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVC16374DLR 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 SN74LVC16374DLR reliable?

The price and inventory of SN74LVC16374DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC16374DLR is usually 5 days.

3.What payment methods are accepted for SN74LVC16374DLR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC16374DLR transactions.

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4.How is shipping managed for SN74LVC16374DLR?

SN74LVC16374DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVC16374DLR 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 SN74LVC16374DLR?

For technical support, including SN74LVC16374DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC16374DLR requirements.

6.How does Aetrix verify that SN74LVC16374DLR is sourced from the original manufacturer or authorized distributors?

All SN74LVC16374DLR 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 SN74LVC16374DLR meets industry standards.

7.What is the process for return or replacement of SN74LVC16374DLR?

All SN74LVC16374DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC16374DLR, 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 SN74LVC16374DLR part is unused and in its original packaging.

Return procedure for SN74LVC16374DLR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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