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Texas Instruments 74ALVCH16374DGGRE4
- Part No.:
- 74ALVCH16374DGGRE4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVCH16374DGGRE4.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,709
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Product details
Overview
74ALVCH16374DGGRE4 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, bus-hold circuitry on all data inputs, ±24-mA drive at 3.3 V, and 4.2 ns max propagation delay. It serves as a bidirectional bus driver or I/O port in low-voltage digital systems such as industrial controllers and memory interface buffers.
For engineers reviewing the 74ALVCH16374DGGRE4 datasheet, 74ALVCH16374DGGRE4 pinout, 74ALVCH16374DGGRE4 application, or 74ALVCH16374DGGRE4 equivalent, key selection criteria include voltage range compatibility (1.65–3.6 V), 3-state output control timing (enable/disable times ≤4.8 ns), bus-hold functionality eliminating external resistors, and TSSOP-48 package suitability for high-density PCB layouts.
Technical Context
This device implements two independent 8-bit positive-edge-triggered D flip-flop banks, each with individual clock (1CLK/2CLK) and output-enable (1OE/2OE) controls. Data latching occurs on the rising edge of CLK; OE asserts high-impedance state without affecting internal register state.
Bus-hold circuitry actively maintains valid logic levels on undriven D inputs, eliminating need for external pullup/pulldown resistors. Output drive strength scales with VCC (±4 mA at 1.65 V, ±24 mA at 3.0 V), supporting direct connection to terminated or unterminated transmission lines in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - supports interoperability across 1.8 V, 2.5 V, and 3.3 V logic domains |
| tpd Max | 4.2 ns at 3.3 V - enables reliable operation up to 150 MHz clock frequency in synchronous interfaces |
| Output Drive | ±24 mA at 3.0 V - drives multiple LVTTL loads or short PCB traces without buffering |
| Bus-Hold | Integrated on all D inputs - prevents floating-input-induced glitches and EMI without external components |
| tens/tdis Max | 4.8 ns / 4.3 ns at 3.3 V - ensures fast, predictable bus turnaround for time-critical shared-data applications |
| Input Thresholds | VIL = 0.35×VCC (min), VIH = 0.65×VCC (min) - provides noise margin >0.5 V at 3.3 V supply |
| ESD Rating | 2000-V HBM, 200-V MM - meets industrial-grade robustness requirements for board-level handling |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5 mm pitch, lead-free NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output enable control (active-low) | Independent 3-state control per 8-bit bank; OE high forces outputs to high-Z regardless of CLK/D state |
| 1CLK, 2CLK | Clock input (positive-edge sensitive) | Rising edge captures D-input values into corresponding Q outputs; no internal synchronization |
| 1D1–1D8, 2D1–2D8 | Data inputs | All support bus-hold; tolerate undriven states without external biasing |
| 1Q1–1Q8, 2Q1–2Q8 | Registered outputs | 3-state capable; drive strength and VOH/VOL specified per VCC and load current |
| VCC, GND | Power supply terminals | Four VCC and six GND pins distributed for low-noise, low-inductance decoupling in high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit banks | Enables flexible partitioning-e.g., one bank for address latching, another for data strobing-without inter-bank timing constraints |
| Wide VCC range (1.65–3.6 V) | Eliminates level shifters when interfacing 1.8 V FPGAs with 3.3 V peripherals or legacy 2.5 V ASICs |
| Bus-hold on all D inputs | Reduces BOM count and layout area by removing 16 external pullup resistors typically required for unused I/O pins |
| High-output drive (±24 mA) | Drives 10+ LVTTL loads or 50 Ω transmission lines directly, reducing need for external drivers in backplane or bus applications |
| Low propagation delay (4.2 ns) | Supports setup/hold timing margins in 100+ MHz synchronous designs with minimal clock skew compensation |
Applications
| Industrial PLC I/O Module | Memory Interface Buffer |
|---|---|
Use Scenario: Isolating microcontroller GPIO from noisy 24 V field-side sensors and actuators via optocoupled signal paths. IC Role / Device Role / Timing Role: Input latch capturing synchronized sensor status on rising CLK edge; OE controlled by MCU to gate data reads during interrupt service. Use Value: Bus-hold prevents metastability on unconnected D lines during hot-swap events; 3.6 V tolerance allows direct connection to 3.3 V MCU I/O rails. | Use Scenario: Buffering parallel address/data bus between FPGA and SRAM in embedded vision system. IC Role / Device Role / Timing Role: Registered output driver providing clean, edge-aligned signals to SRAM address lines; dual-bank operation separates address (Bank 1) and data (Bank 2) paths. Use Value: 4.2 ns tpd ensures <1 ns jitter contribution to 100 MHz SRAM access timing; ±24 mA drive sustains signal integrity over 8 cm trace lengths. |
| FPGA Configuration Interface | Legacy Bus Bridge |
Use Scenario: Capturing configuration bitstream from SPI flash into FPGA during power-up sequence. IC Role / Device Role / Timing Role: Synchronizing 16-bit parallel config data from flash controller; OE tied low to maintain active outputs during boot. Use Value: 1.65 V minimum VCC enables use with low-power flash devices; bus-hold avoids spurious writes due to slow-rising flash output edges. | Use Scenario: Adapting 16-bit ISA bus signals to modern microcontroller with limited native parallel I/O. IC Role / Device Role / Timing Role: Bidirectional bus transceiver emulating ISA data latch behavior; CLK driven by ISA IOR/IOW strobes, OE controlled by address decode. Use Value: Dual-bank architecture matches ISA's even/odd byte lanes; 3.6 V absolute max rating protects against legacy 5 V bus overshoots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit registered buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16374ADGGR | Lower drive (±24 mA only at 3.3 V; drops to ±12 mA at 2.5 V), no bus-hold | Requires external pullups on unused inputs; less suitable for hot-plug or floating-bus environments | Select when cost sensitivity outweighs bus-hold requirement and VCC is stable at 3.3 V |
| 74AVC16374DGGR | Wider VCC range (1.2–3.6 V), higher speed (3.2 ns tpd), but no bus-hold | Lacks bus-hold; requires careful PCB layout to avoid floating inputs in partial-population scenarios | Prefer for ultra-low-voltage (1.2–1.5 V) FPGA interfaces where bus-hold is managed elsewhere |
Compared with SN74LVC16374ADGGR and 74AVC16374DGGR, the 74ALVCH16374DGGRE4 uniquely combines bus-hold, wide VCC range, and guaranteed 3.3 V drive in a single device-making it optimal for industrial I/O where input reliability and mixed-voltage interoperability are non-negotiable.
Availability
74ALVCH16374DGGRE4 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA configuration interfaces, memory interface buffers, and legacy bus bridge designs requiring stable component supply across extended temperature ranges.
Supply support for 74ALVCH16374DGGRE4 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 over 90 years of innovation in industrial, automotive, and communications markets.
The ALVCH family delivers advanced low-voltage CMOS logic optimized for mixed-supply systems, emphasizing bus-hold integration, wide operating voltage, and high-speed 3-state performance for interface and buffering applications.
FAQ
What is the maximum clock frequency supported by the 74ALVCH16374DGGRE4?
The 74ALVCH16374DGGRE4 supports a maximum clock frequency of 150 MHz under recommended operating conditions (VCC = 3.3 V, TA = 25°C). This is derived from its 4.2 ns maximum propagation delay and verified timing parameters including setup (1.9 ns min) and hold (0.5 ns min) times. Operation at 150 MHz assumes proper PCB layout, adequate decoupling, and compliance with input transition rate limits (≤10 ns/V).
Does the 74ALVCH16374DGGRE4 require external pullup resistors on its data inputs?
No, the 74ALVCH16374DGGRE4 does not require external pullup or pulldown resistors on its data inputs because it integrates active bus-hold circuitry on all D pins. This feature maintains valid logic states on undriven or floating inputs, preventing undefined behavior and reducing BOM count. Using external resistors with bus-hold enabled is explicitly discouraged in the datasheet.
How does the 74ALVCH16374DGGRE4 handle power-up sequencing when OE is not actively driven?
To ensure high-impedance outputs during power-up or power-down, OE should be tied to VCC through a pullup resistor; the minimum value depends on the driver's current-sinking capability. The 74ALVCH16374DGGRE4 does not auto-tri-state on power ramp-OE must be externally biased high to prevent bus contention before the controlling logic is active.
Can the 74ALVCH16374DGGRE4 be used as a single 16-bit register or must it operate as two 8-bit registers?
The 74ALVCH16374DGGRE4 can be used flexibly as either two independent 8-bit registers (using separate 1CLK/1OE and 2CLK/2OE controls) or as a unified 16-bit register (by tying 1CLK = 2CLK and 1OE = 2OE). Its pinout and functional design support both configurations without performance penalty or timing derating.
What package type and RoHS status does the 74ALVCH16374DGGRE4 use?
The 74ALVCH16374DGGRE4 uses a TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5 mm pitch, NiPdAu lead finish, and is RoHS-compliant (lead-free). It carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH) and is supplied in tape-and-reel format (2000 units per reel).
74ALVCH16374DGGRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVCH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 4.2ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Current - Quiescent (Iq):
- 40 µA
- Input Capacitance:
- 3 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74ALVCH16374DGGRE4 FAQ
1.How can I place an order for 74ALVCH16374DGGRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16374DGGRE4 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 74ALVCH16374DGGRE4 reliable?
The price and inventory of 74ALVCH16374DGGRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16374DGGRE4 is usually 5 days.
3.What payment methods are accepted for 74ALVCH16374DGGRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16374DGGRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVCH16374DGGRE4?
74ALVCH16374DGGRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16374DGGRE4 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 74ALVCH16374DGGRE4?
For technical support, including 74ALVCH16374DGGRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16374DGGRE4 requirements.
6.How does Aetrix verify that 74ALVCH16374DGGRE4 is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16374DGGRE4 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 74ALVCH16374DGGRE4 meets industry standards.
7.What is the process for return or replacement of 74ALVCH16374DGGRE4?
All 74ALVCH16374DGGRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16374DGGRE4, 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 74ALVCH16374DGGRE4 part is unused and in its original packaging.
Return procedure for 74ALVCH16374DGGRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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