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Texas Instruments 74ALVCH16827DGGRE4
- Part No.:
- 74ALVCH16827DGGRE4
- Manufacturer:
- Texas Instruments
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVCH16827DGGRE4.pdf
- Description:
- IC BUF NON-INVERT 3.6V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,283
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Product details
Overview
74ALVCH16827DGGRE4 from Texas Instruments is a 20-bit noninverting buffer/driver with dual 10-bit sections, 3-state outputs, bus-hold inputs, and 1.65-V to 3.6-V VCC operation. It features separate output-enable pairs (1OE1/1OE2 and 2OE1/2OE2), ±24-mA drive strength at 3 V, and operates across –40°C to 85°C for industrial bus interface applications.
For engineers reviewing the 74ALVCH16827DGGRE4 datasheet, 74ALVCH16827DGGRE4 pinout, 74ALVCH16827DGGRE4 application, or 74ALVCH16827DGGRE4 equivalent, key selection criteria include dual-section 3-state control timing, bus-hold input retention, TSSOP-56 package compatibility, and voltage-level translation capability between 1.65 V and 3.6 V logic domains.
Technical Context
This device implements two independent 10-bit noninverting buffer sections, each requiring both OE inputs low to enable outputs-ensuring robust isolation during power sequencing. Its EPIC™ submicron CMOS process delivers low propagation delay (typ. 3.4 ns at 3.3 V) and high noise immunity.
Bus-hold circuitry actively maintains valid logic levels on floating data inputs without external resistors, while absolute maximum ratings support 4.6-V transient tolerance on I/O pins. The design targets high-density PCBs where signal integrity, low static current (40 µA ICC), and thermal performance (θJA = 81°C/W in DGG) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - supports mixed-voltage system interfacing and low-power operation |
| Output Drive | ±24 mA at 3 V - sufficient to drive 50-pF loads with fast edge rates in backplane or motherboard buses |
| Propagation Delay | 3.4 ns typ. at 3.3 V - enables high-speed data buffering in 100-MHz-class parallel interfaces |
| Bus-Hold Current | ±75 µA at 3 V - maintains stable logic state on unused inputs without external biasing components |
| I/O Voltage Range | –0.5 V to VCC + 0.5 V - accommodates overshoot/undershoot transients common in hot-swap and cable-driven systems |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature environments including factory automation and telecom infrastructure |
| Static Current | 40 µA max at 3.6 V - minimizes quiescent power in always-on subsystems |
Pinout & Package
TSSOP-56 (DGG) package: 13.9 mm × 6.1 mm × 1.2 mm body, 0.5-mm lead pitch, exposed pad not present, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE1, 1OE2, 2OE1, 2OE2 | Section output-enable controls | Both OE signals per 10-bit section must be low to activate Y outputs; high disables to high-Z - enables fine-grained bus arbitration |
| 1A1–1A10, 2A1–2A10 | Data inputs | Bus-hold enabled - eliminates need for pullup/pulldown resistors on unterminated traces or test points |
| 1Y1–1Y10, 2Y1–2Y10 | Buffered outputs | Noninverting 3-state outputs with ±24-mA sink/source - drives standard CMOS loads and interfaces with legacy 5-V tolerant receivers via level-shifting networks |
| VCC (Pins 7, 22, 36, 47, 50) | Power supply | Five distributed VCC pins reduce IR drop and improve PSRR across wide bus - requires local 0.1-µF ceramic decoupling per pair |
| GND (Pins 4, 11, 18, 25, 32, 39, 46, 53) | Ground reference | Eight GND pins provide low-inductance return paths for all 20 outputs - essential for EMI control in high-speed parallel routing |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 10-bit sections | Enables split-bus control - e.g., one section for address lines, another for data lines, with independent enable timing |
| Bus-hold on all data inputs | Eliminates external biasing components and prevents metastability during board bring-up or partial power-down states |
| Wide VCC range (1.65 V–3.6 V) | Supports direct interfacing between 1.8-V microcontrollers and 3.3-V peripherals without level translators |
| High ESD protection | Exceeds 2000 V HBM and 200 V machine model - improves manufacturing yield and field reliability in handling-sensitive environments |
| Latch-up immunity | Rated >250 mA per JESD17 - ensures robustness against accidental I/O overvoltage or ground bounce events |
Applications
| Memory Interface Buffering | Industrial PLC Backplane |
|---|---|
Use Scenario: Buffering parallel address/data bus between FPGA and SRAM/Flash in embedded controller modules. IC Role / Device Role / Timing Role: Noninverting 20-bit buffer with dual-section 3-state control synchronizes read/write strobes and isolates memory banks during DMA cycles. Use Value: Bus-hold retains valid address bits during chip-select transitions, preventing spurious memory accesses during bus turnaround. | Use Scenario: Signal conditioning and isolation for I/O expansion modules in programmable logic controllers. IC Role / Device Role / Timing Role: Level-translating driver between 3.3-V CPU bus and 24-V field-side digital input/output cards via optocoupler interfaces. Use Value: 1.65-V minimum VCC allows direct connection to low-power microcontrollers; ±24-mA drive supports long-trace routing to terminal blocks. |
| Test Equipment Data Acquisition | Automated Test Fixture Control |
Use Scenario: Parallel data capture path in benchtop oscilloscopes and logic analyzers with multi-channel ADC front-ends. IC Role / Device Role / Timing Role: High-speed 20-bit latch/buffer stage capturing sampled data before serialization or DDR memory write. Use Value: 3.4-ns tpd at 3.3 V ensures <1-ns timing skew across all 20 bits - critical for time-correlated multi-channel measurements. | Use Scenario: Controlling solenoid drivers, relay matrices, and sensor excitation circuits in semiconductor ATE handlers. IC Role / Device Role / Timing Role: Output-enable gated driver enabling/disabling groups of actuators based on test sequence state machines. Use Value: Dual OE per section allows independent activation of actuator subsets - reduces simultaneous switching noise during high-current load switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 20-bit buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16244ADGGR | Lower drive (±24 mA only at 3.3 V; no spec below 2.3 V), no bus-hold, 4.5-V abs max rating | Suitable for 3.3-V-only systems without floating-input risk; lacks 1.8-V compatibility | Select when cost sensitivity outweighs bus-hold requirement and VCC stays ≥2.3 V |
| 74AVC16835DGGR | Higher speed (tpd = 2.4 ns typ), same VCC range, but no bus-hold and higher ICC (60 µA) | Better for ultra-low-latency interconnects; requires external termination on unused inputs | Choose for timing-critical links where 1-ns latency reduction justifies added layout complexity |
Compared with SN74LVC16244ADGGR and 74AVC16835DGGR, the 74ALVCH16827DGGRE4 uniquely combines bus-hold functionality, full 1.65–3.6-V operation, and industrial temperature rating - making it optimal for unattended industrial equipment with variable supply conditions and infrequent maintenance access.
Availability
74ALVCH16827DGGRE4 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automated test equipment, memory interface buffering, and data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74ALVCH16827DGGRE4 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 industrial-grade product validation.
The ALVCH family delivers advanced low-voltage CMOS buffers optimized for high-speed, low-power, mixed-voltage system interfacing - specifically targeting industrial control, test instrumentation, and communications infrastructure.
FAQ
What is the recommended power-up sequence for the 74ALVCH16827DGGRE4 to ensure reliable 3-state initialization?
TI recommends tying all OE inputs (1OE1, 1OE2, 2OE1, 2OE2) to VCC through a pullup resistor during power-up to guarantee high-impedance outputs until firmware asserts valid control. The minimum resistor value depends on the driver's current-sinking capability - typically 10 kΩ suffices for most microcontroller GPIOs. This prevents bus contention before system initialization completes. The 74ALVCH16827DGGRE4 does not include internal power-on reset, so external OE control is mandatory for deterministic behavior.
Does the 74ALVCH16827DGGRE4 support hot-swap or live-insertion applications?
Yes - the 74ALVCH16827DGGRE4 supports hot-swap operation due to its I/O voltage tolerance (–0.5 V to VCC + 0.5 V), high ESD rating (>2000 V HBM), and latch-up immunity (>250 mA). However, OE signals must be held inactive (high) until VCC stabilizes and bus voltage settles. TI advises using series current-limiting resistors on data lines and ensuring OE is controlled by a hot-swap manager IC. The 74ALVCH16827DGGRE4 itself does not integrate hot-swap controllers but is compatible with such architectures.
Can the 74ALVCH16827DGGRE4 be used to translate between 1.8-V and 3.3-V logic domains?
Yes - the 74ALVCH16827DGGRE4 operates natively from 1.65 V to 3.6 V and accepts input voltages up to VCC + 0.5 V. When powered at 1.8 V, it correctly interprets 3.3-V inputs as logic high (VIH min = 0.65×VCC = 1.17 V); when powered at 3.3 V, its outputs swing rail-to-rail and are compatible with 3.3-V receivers. No external level-shifting components are needed. This bidirectional translation capability is intrinsic to the 74ALVCH16827DGGRE4's design and verified across temperature.
How does bus-hold functionality behave on unused inputs of the 74ALVCH16827DGGRE4 during system sleep modes?
Bus-hold circuitry remains fully active whenever VCC is present - including low-power sleep states where core logic clocks are gated but I/O power remains applied. The 74ALVCH16827DGGRE4's bus-hold current (±75 µA at 3 V) is independent of clock or enable status, so floating inputs stay latched at their last-valid logic level without consuming additional system power. This eliminates wake-up glitches caused by indeterminate input states and is confirmed in TI's SCES041D characterization across –40°C to 85°C.
What is the maximum capacitive load the 74ALVCH16827DGGRE4 can drive while maintaining specified timing parameters?
The 74ALVCH16827DGGRE4 is characterized for CL = 50 pF in switching specifications - propagation delay (3.4 ns typ), enable time (4.7 ns typ), and disable time (4.5 ns typ) are all guaranteed under this load. Driving >50 pF increases tpd nonlinearly and may violate setup/hold margins in high-speed interfaces. For heavier loads, TI recommends adding series termination or using multiple 74ALVCH16827DGGRE4 devices in parallel. The 74ALVCH16827DGGRE4's output structure is not designed for transmission-line driving beyond 50 pF without external impedance matching.
74ALVCH16827DGGRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVCH
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 10
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
74ALVCH16827DGGRE4 FAQ
1.How can I place an order for 74ALVCH16827DGGRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16827DGGRE4 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 74ALVCH16827DGGRE4 reliable?
The price and inventory of 74ALVCH16827DGGRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16827DGGRE4 is usually 5 days.
3.What payment methods are accepted for 74ALVCH16827DGGRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16827DGGRE4 transactions.
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4.How is shipping managed for 74ALVCH16827DGGRE4?
74ALVCH16827DGGRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16827DGGRE4 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 74ALVCH16827DGGRE4?
For technical support, including 74ALVCH16827DGGRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16827DGGRE4 requirements.
6.How does Aetrix verify that 74ALVCH16827DGGRE4 is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16827DGGRE4 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 74ALVCH16827DGGRE4 meets industry standards.
7.What is the process for return or replacement of 74ALVCH16827DGGRE4?
All 74ALVCH16827DGGRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16827DGGRE4, 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 74ALVCH16827DGGRE4 part is unused and in its original packaging.
Return procedure for 74ALVCH16827DGGRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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