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Texas Instruments 74LVCH16374ADGGG4
- Part No.:
- 74LVCH16374ADGGG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74LVCH16374ADGGG4.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,581
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Product details
Overview
74LVCH16374ADGGG4 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 sections (1CLK/1OE and 2CLK/2OE), 5.5-V-tolerant inputs, 4.5 ns max propagation delay at 3.3 V, and bus-hold on all data inputs-enabling reliable data latching in server memory buffers and industrial I/O port expansion.
For engineers reviewing the 74LVCH16374ADGGG4 datasheet, 74LVCH16374ADGGG4 pinout, 74LVCH16374ADGGG4 application, or 74LVCH16374ADGGG4 equivalent, key selection criteria include its dual-output-enable architecture, Ioff support for live insertion, mixed-voltage interface capability (5-V input → 3.3-V output), and TSSOP-48 package compatibility with high-density PCB layouts.
Technical Context
This device implements two independent 8-bit positive-edge-triggered D flip-flop banks, each with dedicated clock (1CLK/2CLK) and output-enable (1OE/2OE) controls. All 16 D inputs feature bus-hold circuitry, eliminating external biasing resistors, while the 3-state outputs support bidirectional bus driving with ±24 mA drive strength at 3.3 V.
Its Ioff functionality disables outputs and blocks current backflow when VCC = 0 V, enabling safe partial-power-down in hot-swap systems. Input voltage tolerance up to 5.5 V allows direct interfacing with legacy 5-V logic without level shifters-critical for mixed-supply server backplanes and industrial controller upgrades.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - supports single-rail operation across low-voltage embedded and industrial systems |
| Max Propagation Delay | 4.5 ns at 3.3 V - enables reliable 150 MHz clock operation in high-speed data capture paths |
| Input Voltage Tolerance | Up to 5.5 V - permits direct connection to 5-V microcontrollers or legacy peripherals without translation |
| Output Drive Strength | ±24 mA at 3.3 V - drives multiple CMOS loads or LED indicators without external buffers |
| Ioff Support | Active at VCC = 0 V - prevents damaging back-current during live insertion or power sequencing |
| Bus-Hold Inputs | On all 16 D pins - maintains valid logic states on floating or unterminated data lines |
| ESD Rating | 2000-V HBM, 1000-V CDM - meets industrial-grade robustness requirements for factory automation |
Pinout & Package
TSSOP-48 package (12.50 mm × 6.10 mm body size) with exposed pad not present; JEDEC-compliant lead finish (NIPDAU), MSL Level-1, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output Enable (active-low) | Independently controls 3-state output drivers for each 8-bit bank; OE = high forces high-impedance |
| 1CLK, 2CLK | Clock Input (positive edge) | Edge-triggered sampling of D inputs; asynchronous to other bank's clock |
| 1D1–1D8, 2D1–2D8 | Data Inputs | All feature integrated bus-hold; accept 0–5.5 V signals regardless of VCC |
| 1Q1–1Q8, 2Q1–2Q8 | Registered Outputs | 3-state outputs with ±24 mA drive; high-impedance when corresponding OE is high |
| VCC (Pins 7,18,31,42) | Power Supply | Four distributed supply pins reduce switching noise and improve PSRR in high-speed operation |
| GND (Pins 4,10,15,21,28,34,39,45) | Ground | Eight ground connections minimize ground bounce (VOLP < 0.8 V at 3.3 V) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit banks | Enables separate timing control for two data streams-e.g., sensor data and control command latching |
| 5.5-V tolerant inputs | Eliminates external level translators when interfacing with 5-V microcontrollers or FPGAs |
| Ioff partial-power-down | Allows safe insertion into powered-backplane systems without disrupting adjacent circuitry |
| Bus-hold on all D inputs | Removes need for 10-kΩ pull-up/down resistors on unused I/O lines-reducing BOM count and board area |
| Low ground bounce (VOLP) | <0.8 V at 3.3 V ensures signal integrity in noise-sensitive analog-digital hybrid systems |
Applications
| Server Memory Buffering | Industrial I/O Port Expansion |
|---|---|
Use Scenario: Latching address/data signals between CPU and DDR memory modules in 1U rack servers. IC Role / Device Role / Timing Role: 16-bit registered buffer with independent OE control per byte lane for write-data staging. Use Value: 4.5 ns tpd and ±24 mA drive ensure setup/hold compliance at 150 MHz while driving stub-loaded memory buses. | Use Scenario: Expanding GPIO count on PLC mainboards using isolated 24-V field inputs. IC Role / Device Role / Timing Role: Input register capturing opto-isolated sensor status before CPU read; OE tied low for continuous monitoring. Use Value: Bus-hold eliminates pull-up resistors on unterminated field wiring, reducing failure points in dusty factory environments. |
| Wearable Health Data Acquisition | Network Switch Control Plane |
Use Scenario: Synchronizing raw ADC samples from ECG/PPG sensors to ultra-low-power MCU in fitness trackers. IC Role / Device Role / Timing Role: Low-voltage (1.8 V) D flip-flop capturing sensor data on rising CLK edge; Ioff enabled during sleep mode. Use Value: 1.65 V minimum VCC allows direct battery operation; Ioff prevents leakage current drain during 95% duty-cycle sleep cycles. | Use Scenario: Managing configuration registers for PHY auto-negotiation and link-status LEDs in 24-port Gigabit switches. IC Role / Device Role / Timing Role: Output register driving LED drivers and MDIO control bits; dual OE used for staggered update sequences. Use Value: 5.5-V tolerant inputs accept 5-V management MCU signals; 3-state outputs prevent bus contention during firmware updates. |
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 |
|---|---|---|---|
| SN74LVC16374ADGGR | No bus-hold; requires external pull resistors on unused inputs; identical pinout and timing | Suitable only where all inputs are actively driven; higher BOM cost due to added resistors | Select when system guarantees no floating inputs and cost sensitivity outweighs design simplicity |
| 74ALVCH16374TTR | Higher speed (3.5 ns tpd at 3.3 V); same VCC range and Ioff; different pinout (TSSOP-48 but shifted terminal mapping) | Not drop-in replaceable; requires PCB redesign; preferred for >166 MHz clock domains | Choose only for new designs targeting sub-4 ns propagation with full backward compatibility testing |
Compared with SN74LVC16374ADGGR and 74ALVCH16374TTR, the 74LVCH16374ADGGG4 uniquely combines bus-hold integration, 5.5-V input tolerance, and pin-compatible Ioff support-making it optimal for retrofitting legacy 5-V systems onto modern low-voltage PCBs without layout changes.
Availability
74LVCH16374ADGGG4 is available at Aetrix Electronics and suitable for server memory buffering, industrial I/O port expansion, wearable health data acquisition, and network switch control plane applications requiring stable component supply across extended product lifecycles.
Supply support for 74LVCH16374ADGGG4 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 SN74LVCH16374A belongs to TI's Widebus™ family of advanced CMOS logic devices, engineered specifically for high-speed, mixed-voltage bus interface applications in space-constrained, thermally demanding environments.
FAQ
What is the maximum clock frequency supported by the 74LVCH16374ADGGG4?
The 74LVCH16374ADGGG4 supports a maximum clock frequency of 150 MHz across its full operating voltage range (1.65 V to 3.6 V), verified under recommended conditions with 30 pF load and ≤2.5 ns input rise/fall times. This rating holds for both 8-bit banks independently, enabling concurrent high-speed data capture in dual-channel systems.
Does the 74LVCH16374ADGGG4 require external pull-up or pull-down resistors on its data inputs?
No, the 74LVCH16374ADGGG4 does not require external pull-up or pull-down resistors on its data inputs because all 16 D pins integrate active bus-hold circuitry. This feature maintains valid logic states on floating or unterminated inputs, reducing BOM count and improving reliability in industrial wiring scenarios where connectors may be partially mated.
Can the 74LVCH16374ADGGG4 interface directly with 5-V logic devices?
Yes, the 74LVCH16374ADGGG4 accepts input voltages up to 5.5 V on all D, CLK, and OE pins while operating from a 1.65–3.6 V VCC supply. This allows direct connection to 5-V microcontrollers, FPGAs, or legacy peripherals without level-shifting components-making it ideal for upgrading existing 5-V systems to lower-power logic rails.
What is the purpose of the Ioff feature in the 74LVCH16374ADGGG4?
The Ioff feature in the 74LVCH16374ADGGG4 disables output drivers and blocks current backflow when VCC = 0 V, enabling safe live insertion into powered backplanes or hot-swap modules. This protects upstream circuitry from damage during maintenance or modular system reconfiguration-critical for telecom and server chassis applications.
How many ground and power pins does the 74LVCH16374ADGGG4 have in its TSSOP-48 package?
The 74LVCH16374ADGGG4 in TSSOP-48 has eight ground pins (Pins 4, 10, 15, 21, 28, 34, 39, 45) and four VCC pins (Pins 7, 18, 31, 42). This distributed power/ground architecture minimizes simultaneous switching noise and limits ground bounce to <0.8 V at 3.3 V, ensuring signal integrity in high-speed digital systems.
74LVCH16374ADGGG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74LVCH16374ADGGG4 FAQ
1.How can I place an order for 74LVCH16374ADGGG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH16374ADGGG4 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 74LVCH16374ADGGG4 reliable?
The price and inventory of 74LVCH16374ADGGG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH16374ADGGG4 is usually 5 days.
3.What payment methods are accepted for 74LVCH16374ADGGG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH16374ADGGG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH16374ADGGG4?
74LVCH16374ADGGG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH16374ADGGG4 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 74LVCH16374ADGGG4?
For technical support, including 74LVCH16374ADGGG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH16374ADGGG4 requirements.
6.How does Aetrix verify that 74LVCH16374ADGGG4 is sourced from the original manufacturer or authorized distributors?
All 74LVCH16374ADGGG4 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 74LVCH16374ADGGG4 meets industry standards.
7.What is the process for return or replacement of 74LVCH16374ADGGG4?
All 74LVCH16374ADGGG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH16374ADGGG4, 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 74LVCH16374ADGGG4 part is unused and in its original packaging.
Return procedure for 74LVCH16374ADGGG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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