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Texas Instruments SN74LVCH16374AGQLR
- Part No.:
- SN74LVCH16374AGQLR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 56-VFBGA
- Datasheet:
-
SN74LVCH16374AGQLR.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
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Product details
Overview
SN74LVCH16374AGQLR from Texas Instruments is a 16-bit edge-triggered D-type flip-flop with 3-state outputs, designed for 1.65 V to 3.6 V operation. It features dual 8-bit banks (1Q1–1Q8 and 2Q1–2Q8), independent output-enable (1OE/2OE) and clock (1CLK/2CLK) inputs, 5.5-V-tolerant inputs, and bus-hold circuitry on all data inputs. It delivers 24 mA output drive at 3.3 V and supports high-speed bus interfacing in mixed-voltage systems.
For engineers reviewing the SN74LVCH16374AGQLR datasheet, SN74LVCH16374AGQLR pinout, SN74LVCH16374AGQLR application, or SN74LVCH16374AGQLR equivalent, key selection criteria include its Ioff-enabled live insertion capability, 4.5 ns max propagation delay at 3.3 V, 150 MHz maximum clock frequency, 3-state output control per bank, and compatibility with 5-V input signals in 3.3-V systems.
Technical Context
This device implements two independent 8-bit positive-edge-triggered D-type flip-flop banks, each with dedicated clock and output-enable control. Each bank latches data on the rising edge of its respective CLK input and drives or tri-states its eight Q outputs based on OE state - no internal dependency between banks.
It integrates Ioff circuitry enabling partial-power-down operation with back-drive protection, bus-hold on all 16 D inputs eliminating external biasing, and 5.5-V-tolerant inputs compatible with legacy 5-V logic while operating from 1.65–3.6 V VCC. Output drive strength is rated up to 24 mA per pin at 3.3 V, supporting direct fanout to multiple loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - Enables use across low-voltage embedded and industrial logic rails. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct interface with 5-V controllers without level shifters. |
| Max Propagation Delay (tpd) | 4.5 ns at VCC = 3.3 V - Supports reliable 150 MHz clock operation in high-speed data paths. |
| Output Drive (IOL/IOH) | ±24 mA at VCC = 3.3 V - Sufficient to drive multiple CMOS inputs or small LEDs directly. |
| Ioff Support | Active at VCC = 0 V - Prevents current backflow during hot-plug or power sequencing. |
| Bus-Hold Current | ±45 μA at VCC = 2.3 V - Maintains valid logic state on floating D inputs without external resistors. |
| Operating Temperature | –40°C to +125°C - Qualified for automotive under-hood and industrial control environments. |
Pinout & Package
The SN74LVCH16374AGQLR is packaged in a 56-ball GQL (Fine-Pitch BGA) package measuring 7.0 mm × 4.5 mm × 1.0 mm, optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output Enable Inputs | Active-low controls for Bank 1 and Bank 2 outputs - enable/disable 8-bit groups independently. |
| 1CLK, 2CLK | Clock Inputs | Rising-edge sensitive - latch D inputs into Q outputs synchronously per bank. |
| 1D1–1D8, 2D1–2D8 | Data Inputs | 16 total D inputs with integrated bus-hold - eliminate need for external pull-up/down resistors. |
| 1Q1–1Q8, 2Q1–2Q8 | Tri-State Outputs | 16 buffered outputs with 3-state control - support shared bus architectures and bidirectional data flow. |
| VCC, GND | Power Terminals | Multiple distributed VCC (pins A5, C3, C4, D3, D4, E3, F3, G3, H3, J3) and GND (pins A4, B3, B4, D2, E2, F2, G2, H2, J2, K3) pins reduce impedance and improve noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit banks | Enables flexible partitioning - e.g., one bank for address latching, another for data buffering - without inter-bank timing coupling. |
| 5.5-V-tolerant inputs | Permits direct connection to 5-V microcontrollers or FPGAs in 3.3-V systems, reducing BOM count and layout complexity. |
| Ioff and live-insertion support | Allows safe board replacement in powered-backplane systems by blocking reverse current when VCC = 0 V. |
| Bus-hold on all D inputs | Maintains last-valid logic state on unconnected or unterminated inputs - critical for robustness in modular or field-upgradeable designs. |
| High-impedance output control | Prevents bus contention in multi-driver configurations - essential for shared memory/data buses in servers and networking equipment. |
Applications
| Server Memory Buffering | Industrial I/O Expansion |
|---|---|
Use Scenario: Latching address and command signals between a 5-V FPGA controller and DDR memory subsystem operating at 3.3 V. IC Role / Device Role: Dual-bank D flip-flop acting as voltage-translating register - Bank 1 holds address bits, Bank 2 holds control strobes. Use Value: Eliminates discrete level shifters; 5.5-V input tolerance accepts FPGA outputs directly; Ioff prevents backfeed during memory hot-swap. |
Use Scenario: Isolating and buffering digital I/O lines from a microcontroller to external sensors and actuators in a programmable logic controller (PLC). IC Role / Device Role: 16-bit I/O port expander with configurable 3-state control per group - enables dynamic reconfiguration of input/output direction. Use Value: Bus-hold maintains safe default states on open inputs; ±24 mA drive supports direct LED indicators or relay drivers; 125°C rating suits harsh cabinet environments. |
| Network Switch Data Path | Wearable Health Sensor Hub |
Use Scenario: Synchronizing parallel status data from multiple PHY interfaces into a central packet processor in a 10/100 Mbps Ethernet switch. IC Role / Device Role: Edge-triggered register capturing link status, speed negotiation, and error flags on clock edges aligned to system timing reference. Use Value: 4.5 ns tpd ensures setup/hold compliance at 150 MHz; dual OE allows staggered readout without bus contention; low ICC reduces thermal load in dense switch fabric. |
Use Scenario: Interfacing multiple low-power analog sensor ADCs (e.g., heart rate, SpO₂, motion) to an ultra-low-power MCU in a compact wearable device. IC Role / Device Role: Low-voltage (1.8 V) data latch and bus isolator - holds sensor readings until MCU initiates read cycle via controlled OE assertion. Use Value: Operates down to 1.65 V - extends battery life; small 7.0 × 4.5 mm GQL package saves PCB area; bus-hold prevents erratic behavior during intermittent sensor disconnects. |
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 |
|---|---|---|---|
| SN74LVC16374ADGGR | No bus-hold; 5-V-tolerant inputs only up to 5.5 V with VCC ≥ 2.3 V; lower drive (24 mA only at VCC = 3.3 V). | Lacks bus-hold - requires external pull resistors on unused inputs; less robust in noisy or modular systems. | Choose when cost sensitivity outweighs need for bus-hold and full 1.65–3.6 V operation. |
| 74ALVCH16374TTR | Higher speed (tpd = 3.2 ns @ 3.3 V); same VCC range and Ioff; identical pinout in TSSOP-48 but not GQL. | Requires PCB redesign for TSSOP-48 footprint; better suited for timing-critical telecom line cards than space-constrained wearables. | Choose when sub-4 ns propagation is mandatory and GQL package is not required. |
Compared with SN74LVCH16374AGQLR, SN74LVC16374ADGGR sacrifices bus-hold and wide-VCC flexibility for lower cost, while 74ALVCH16374TTR trades package compatibility for higher speed - making SN74LVCH16374AGQLR optimal for compact, robust, mixed-voltage embedded systems requiring zero external biasing.
Availability
SN74LVCH16374AGQLR is available at Aetrix Electronics and suitable for server memory buffering, industrial I/O expansion, network switch data path synchronization, and wearable health sensor hub applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for SN74LVCH16374AGQLR 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 signal-path ICs.
The SN74LVCH16374AGQLR belongs to TI's Widebus™ family of advanced logic devices, engineered specifically for high-speed, low-voltage, mixed-signal bus interfacing in computing, communications, and industrial automation systems.
FAQ
What is the operating voltage range for the SN74LVCH16374AGQLR?
The SN74LVCH16374AGQLR operates from 1.65 V to 3.6 V on VCC. This wide range supports compatibility with 1.8-V, 2.5-V, and 3.3-V logic domains. Input pins tolerate voltages up to 5.5 V regardless of VCC level, enabling seamless interfacing with legacy 5-V components without external level shifters. The SN74LVCH16374AGQLR maintains full functionality-including bus-hold and Ioff-across this entire supply range.
Does the SN74LVCH16374AGQLR support hot-plug or live-insertion applications?
Yes, the SN74LVCH16374AGQLR supports live insertion via its Ioff feature. When VCC = 0 V, the Ioff circuitry disables all outputs and blocks current flow from inputs or outputs, preventing damaging back-current during board insertion or removal in powered-backplane systems. This capability is explicitly characterized per JESD78 and validated across –40°C to 125°C, making the SN74LVCH16374AGQLR suitable for telecom and industrial modular chassis designs.
How does the bus-hold function work on the SN74LVCH16374AGQLR?
The SN74LVCH16374AGQLR integrates active bus-hold circuitry on all 16 D inputs. When an input is left unconnected or floats, the internal feedback network maintains it at its last-valid logic state using ±45 μA hold current (at VCC = 2.3 V). This eliminates the need for external pull-up or pull-down resistors, reduces BOM count, and improves noise immunity in modular or field-serviceable systems. Bus-hold remains active across the full VCC range and temperature specification.
What is the maximum clock frequency supported by the SN74LVCH16374AGQLR?
The SN74LVCH16374AGQLR supports a maximum clock frequency of 150 MHz across its full operating range (1.65 V to 3.6 V VCC). This is guaranteed by its 3.3 ns minimum clock pulse width (tw) and 1.1 ns maximum hold time (th) at 3.3 V. Timing margins remain compliant even at elevated temperatures (up to +125°C), and the device meets setup/hold requirements for synchronous data capture in high-speed memory and packet-processing applications using the SN74LVCH16374AGQLR.
Is the SN74LVCH16374AGQLR pin-compatible with other 16-bit flip-flops in TI's portfolio?
The SN74LVCH16374AGQLR uses a proprietary 56-ball GQL BGA footprint and is not pin-compatible with TSSOP-48 or SSOP-48 variants like SN74LVCH16374ADGG or SN74LVCH16374ADL. However, its logic function, timing parameters, and electrical behavior are fully compatible with those parts - enabling drop-in functional replacement where board redesign accommodates the GQL package. Signal mapping (D/Q/OE/CLK) and power pin distribution follow TI's Widebus™ standard architecture.
SN74LVCH16374AGQLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCH
- Package/Case:
- 56-VFBGA
- Packaging:
- Bulk
- 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:
- 150 MHz
- Max Propagation Delay @ V, Max CL:
- 4.5ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Current - Quiescent (Iq):
- 20 µA
- Input Capacitance:
- 5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-BGA Microstar Junior (7x4.5)
SN74LVCH16374AGQLR FAQ
1.How can I place an order for SN74LVCH16374AGQLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCH16374AGQLR 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 SN74LVCH16374AGQLR reliable?
The price and inventory of SN74LVCH16374AGQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCH16374AGQLR is usually 5 days.
3.What payment methods are accepted for SN74LVCH16374AGQLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCH16374AGQLR transactions.
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4.How is shipping managed for SN74LVCH16374AGQLR?
SN74LVCH16374AGQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCH16374AGQLR 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 SN74LVCH16374AGQLR?
For technical support, including SN74LVCH16374AGQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCH16374AGQLR requirements.
6.How does Aetrix verify that SN74LVCH16374AGQLR is sourced from the original manufacturer or authorized distributors?
All SN74LVCH16374AGQLR 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 SN74LVCH16374AGQLR meets industry standards.
7.What is the process for return or replacement of SN74LVCH16374AGQLR?
All SN74LVCH16374AGQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCH16374AGQLR, 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 SN74LVCH16374AGQLR part is unused and in its original packaging.
Return procedure for SN74LVCH16374AGQLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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