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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74ALVTH162827VR

Name: SN74ALVTH162827VR
Brand: Texas Instruments
SKU: SN74ALVTH162827VR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74ALVTH162827VR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 56-TFSOP (0.173", 4.40mm Width)

Datasheet:: SN74ALVTH162827VR.pdf

Description:: IC BUF NON-INVERT 3.6V 56TVSOP

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Product details

Overview

SN74ALVTH162827VR from Texas Instruments is a 20-bit noninverting buffer/driver with 3-state outputs, designed for 2.5-V/3.3-V V_CC operation and TTL-level 5-V system interfacing. It features bus-hold circuitry on all data inputs, integrated 30-Ω output series resistors, and auto 3-state functionality that disables outputs when V_OUT exceeds V_CC + 0.5 V - enabling robust signal integrity in mixed-voltage backplane or memory interface applications.

For engineers reviewing the SN74ALVTH162827VR datasheet, SN74ALVTH162827VR pinout, SN74ALVTH162827VR application, or SN74ALVTH162827VR equivalent, this device delivers verified 20-bit bidirectional buffering with live-insertion support, power-off high-impedance state, and guaranteed <4.1 ns propagation delay (V_CC = 2.5 V, C_L = 30 pF), making it suitable for high-speed board-level interconnects requiring voltage translation and bus stability.

Technical Context

This device implements a dual 10-bit architecture with independent OE control per section (1OE1/1OE2 and 2OE1/2OE2), where both OE inputs must be low to enable corresponding Y outputs. Its Advanced BiCMOS Technology (ABT) enables low static power dissipation while supporting mixed-mode signaling: 5-V-tolerant inputs and outputs operate reliably across V_CC = 2.3–3.6 V.

The flow-through pinout minimizes trace crossovers, and distributed V_CC/GND pins reduce high-speed switching noise. Bus-hold circuitry eliminates external pullup/pulldown resistors, and output ports integrate 30-Ω series termination to suppress overshoot/undershoot without discrete components.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3 V to 3.6 V - supports dual-supply systems and ensures compatibility with 2.5-V and 3.3-V logic domains.
Input Voltage Tolerance	–0.5 V to 7 V - enables direct connection to 5-V TTL buses without level-shifting circuitry.
t_PLH/t_PHL	1.0–3.9 ns (V_CC = 3.3 V, C_L = 50 pF) - guarantees sub-4 ns propagation for timing-critical address/data paths.
I_OL/I_OH	12 mA sink / –12 mA source - drives standard LVTTL loads with margin for fanout and trace capacitance.
Bus-Hold Current	±75 µA (V_CC = 3 V) - actively holds floating inputs at valid logic levels, preventing metastability in unterminated stubs.
Power-Up High-Z	Active below V_CC ≤ 1.2 V - prevents bus contention during power sequencing in hot-swap or multi-rail systems.
Output Series Resistor	30 Ω integrated - eliminates need for external termination resistors, reducing BOM count and PCB area.

Pinout & Package

SN74ALVTH162827VR is packaged in a 56-pin Thin Very Small-Outline Package (TVSOP, DGV), 3.6 mm × 11.4 mm footprint, 1.2 mm max height, JEDEC MO-194 compliant, with gull-wing leads and exposed thermal pad (non-electrical).

Pin/Terminal	Circuit Role	Design Meaning
1A1–1A10, 2A1–2A10	Data Inputs (20 total)	Accept TTL/CMOS signals; each includes bus-hold circuitry to maintain logic state when un-driven.
1Y1–1Y10, 2Y1–2Y10	3-State Outputs (20 total)	Noninverting buffered outputs with integrated 30-Ω series resistance; enter high-Z when any OE is high.
1OE1, 1OE2, 2OE1, 2OE2	Output Enable Controls	Active-low per 10-bit section; both OE signals must be low to enable respective Y outputs.
V_CC (Pins 7, 22, 36, 51)	Supply Voltage	Distributed power pins minimize IR drop and switching noise; require local 0.1 µF decoupling per pair.
GND (Pins 4, 11, 26, 33, 40, 47)	Ground Reference	Six dedicated ground pins provide low-inductance return paths for all 20 drivers and internal logic.

Key Features

Feature	Design Value
Auto 3-State	Outputs automatically enter high-impedance when V_OUT > V_CC + 0.5 V - prevents latch-up and current backflow during hot-plug or voltage mismatch events.
Live Insertion Support	Outputs disabled during power-off (I_OFF ≤ ±100 µA) - allows safe insertion/removal in powered-backplane systems without disrupting bus operation.
Flow-Through Architecture	Input and output pins arranged linearly across opposing sides - simplifies PCB routing, reduces layer count, and avoids vias in high-speed traces.
Mixed-Mode I/O	5-V-tolerant inputs/outputs with 2.5-V/3.3-V V_CC - enables direct interface between legacy 5-V controllers and modern low-voltage FPGAs or ASICs.
Low Ground Bounce	V_OLP < 0.8 V (V_CC = 3.3 V, T_A = 25°C) - minimizes noise coupling into adjacent signals during simultaneous switching.

Applications

Memory Interface Buffering	Backplane Signal Conditioning
Use Scenario: Driving address/data lines between a 3.3-V FPGA and multiple 5-V SRAM chips on a shared bus. IC Role / Device Role / Timing Role: Noninverting 20-bit buffer providing level translation, bus hold, and slew control to prevent signal degradation over long traces. Use Value: Eliminates external termination resistors and pull-ups while ensuring clean edges and stable logic states under varying load conditions.	Use Scenario: Interfacing a 2.5-V microcontroller to a 5-V industrial I/O module via a 20-line parallel bus. IC Role / Device Role / Timing Role: Voltage-tolerant driver enabling reliable communication across mixed-supply subsystems with minimal layout overhead. Use Value: Guarantees <4 ns propagation delay and auto 3-state behavior, reducing timing margin risk and eliminating manual OE sequencing logic.
Hot-Swappable Module Interface	Legacy System Upgrade Bridge
Use Scenario: Adding modular expansion cards to a powered 3U CompactPCI chassis with strict live-insertion requirements. IC Role / Device Role / Timing Role: Isolation buffer ensuring bus integrity during card insertion/removal by maintaining high-Z state until V_CC stabilizes. Use Value: Prevents bus contention and system reset events through guaranteed power-up/power-down high-impedance behavior below 1.2 V.	Use Scenario: Upgrading a 5-V PLC controller's peripheral interface to support new 3.3-V sensors without redesigning the mainboard. IC Role / Device Role / Timing Role: Bidirectional voltage translator preserving signal timing and logic thresholds across supply domains. Use Value: Supports full 20-bit parallel data transfer with no external components, reducing redesign effort and qualification time.

Memory Interface Buffering

Backplane Signal Conditioning

Use Scenario: Driving address/data lines between a 3.3-V FPGA and multiple 5-V SRAM chips on a shared bus.

IC Role / Device Role / Timing Role: Noninverting 20-bit buffer providing level translation, bus hold, and slew control to prevent signal degradation over long traces.

Use Value: Eliminates external termination resistors and pull-ups while ensuring clean edges and stable logic states under varying load conditions.

Use Scenario: Interfacing a 2.5-V microcontroller to a 5-V industrial I/O module via a 20-line parallel bus.

IC Role / Device Role / Timing Role: Voltage-tolerant driver enabling reliable communication across mixed-supply subsystems with minimal layout overhead.

Use Value: Guarantees <4 ns propagation delay and auto 3-state behavior, reducing timing margin risk and eliminating manual OE sequencing logic.

Hot-Swappable Module Interface

Legacy System Upgrade Bridge

Use Scenario: Adding modular expansion cards to a powered 3U CompactPCI chassis with strict live-insertion requirements.

IC Role / Device Role / Timing Role: Isolation buffer ensuring bus integrity during card insertion/removal by maintaining high-Z state until V_CC stabilizes.

Use Value: Prevents bus contention and system reset events through guaranteed power-up/power-down high-impedance behavior below 1.2 V.

Use Scenario: Upgrading a 5-V PLC controller's peripheral interface to support new 3.3-V sensors without redesigning the mainboard.

IC Role / Device Role / Timing Role: Bidirectional voltage translator preserving signal timing and logic thresholds across supply domains.

Use Value: Supports full 20-bit parallel data transfer with no external components, reducing redesign effort and qualification time.

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
SN74ALVCH162827GR	Lower drive strength (8 mA vs. 12 mA), no auto 3-state, requires explicit OE control.	Better suited for low-power, non-hot-swap applications where bus contention risk is managed externally.	Select when power budget is tighter and mixed-voltage tolerance is not required.
SN74LVC16244ADGGR	3.3-V only (no 5-V input tolerance), no bus-hold, no integrated series resistors.	Requires external pullups and termination; limited to single-supply 3.3-V systems.	Choose for cost-sensitive designs where external components are acceptable and voltage translation is unnecessary.

Compared with SN74ALVTH162827VR, SN74ALVCH162827GR offers reduced power but lacks auto 3-state and 5-V tolerance, while SN74LVC16244ADGGR omits bus-hold and series termination - making SN74ALVTH162827VR uniquely suited for robust, mixed-voltage, hot-pluggable interfaces requiring zero external components.

Availability

SN74ALVTH162827VR is available at Aetrix Electronics and suitable for memory interface buffering, backplane signal conditioning, hot-swappable module interfaces, and legacy system upgrade bridges requiring stable component supply and long-term obsolescence management.

Supply support for SN74ALVTH162827VR 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 ICs and widebus architectures.

The SN74ALVTH162827VR belongs to TI's ALVTH widebus family, engineered specifically for mixed-voltage system interconnects requiring live insertion, bus stability, and minimal external component count in industrial and telecom infrastructure.

FAQ

What is the operating temperature range for SN74ALVTH162827VR?

The SN74ALVTH162827VR is characterized for operation from –40°C to +85°C, matching industrial-grade requirements. This range is explicitly specified in the SCES079E datasheet under recommended operating conditions and applies to all electrical and switching characteristics unless otherwise noted.

Does SN74ALVTH162827VR support 5-V input signals when powered at 2.5 V?

Yes, SN74ALVTH162827VR supports input voltages up to 7 V regardless of V_CC, including full 5-V TTL compatibility at 2.5-V V_CC. The absolute maximum rating confirms VI = –0.5 V to 7 V, and the recommended operating conditions specify VI up to 5.5 V - enabling seamless interfacing with legacy 5-V logic.

How does the bus-hold feature function on SN74ALVTH162827VR?

The bus-hold circuitry on SN74ALVTH162827VR actively maintains unused or floating data inputs at valid logic levels using internal feedback transistors. At V_CC = 3 V, it sources/sinks ±75 µA, ensuring stable VIH/VIL thresholds without external resistors - critical for stubbed or unterminated parallel buses.

What is the purpose of the auto 3-state function in SN74ALVTH162827VR?

The auto 3-state function in SN74ALVTH162827VR disables outputs when V_OUT exceeds V_CC + 0.5 V, preventing reverse current flow and potential damage during voltage mismatches or hot-plug events. This eliminates the need for external voltage monitors or OE gating logic in mixed-supply systems.

Is SN74ALVTH162827VR pin-compatible with other packages in the same family?

Yes, SN74ALVTH162827VR (DGV package) shares identical pinout and functionality with SN74ALVTH162827GR (DGG) and SN74ALVTH162827DL (DL), as confirmed by the SCES079E datasheet's "SN74ALVTH162827 . . . DGG, DGV, OR DL PACKAGE" designation and consistent pin numbering across package drawings.

SN74ALVTH162827VR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ALVTH

Package/Case:: 56-TFSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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:: 32mA, 64mA

Voltage - Supply:: 2.3V ~ 2.7V, 3V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-TVSOP

SN74ALVTH162827VR FAQ

1.How can I place an order for SN74ALVTH162827VR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74ALVTH162827VR 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 SN74ALVTH162827VR reliable?

The price and inventory of SN74ALVTH162827VR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVTH162827VR is usually 5 days.

3.What payment methods are accepted for SN74ALVTH162827VR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALVTH162827VR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74ALVTH162827VR?

SN74ALVTH162827VR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74ALVTH162827VR 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 SN74ALVTH162827VR?

For technical support, including SN74ALVTH162827VR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVTH162827VR requirements.

6.How does Aetrix verify that SN74ALVTH162827VR is sourced from the original manufacturer or authorized distributors?

All SN74ALVTH162827VR 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 SN74ALVTH162827VR meets industry standards.

7.What is the process for return or replacement of SN74ALVTH162827VR?

All SN74ALVTH162827VR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVTH162827VR, 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 SN74ALVTH162827VR part is unused and in its original packaging.

Return procedure for SN74ALVTH162827VR:

1.Submit a request within 90 days.

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

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