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

Texas Instruments SN74ALVCHS162830GR

Name: SN74ALVCHS162830GR
Brand: Texas Instruments
SKU: SN74ALVCHS162830GR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74ALVCHS162830GR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 80-TFSOP (0.240", 6.10mm Width)

Datasheet:: SN74ALVCHS162830GR.pdf

Description:: IC ADDRESS DRIVER 3.6V 80TSSOP

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Product details

Overview

SN74ALVCHS162830GR from Texas Instruments is a 1-bit to 2-bit address driver with 3-state outputs, designed for 2.3-V to 3.6-V V_CC operation. It features integrated bus-hold circuitry on all data inputs, 26-Ω output-series resistors, and dual output-enable controls (OE1/OE2), enabling independent control of two 18-bit output banks in high-density memory or FPGA address expansion systems.

For engineers reviewing the SN74ALVCHS162830GR datasheet, SN74ALVCHS162830GR pinout, SN74ALVCHS162830GR application, or SN74ALVCHS162830GR equivalent, key selection considerations include its dual OE architecture, bus-hold elimination of external pull resistors, 2.3–3.6 V supply range, 3.5 ns typical propagation delay at 3.3 V, and TSSOP-80 (DBB) package with exposed thermal pad.

Technical Context

This device implements a widebus-compatible 1:2 address fanout architecture with two independent 18-bit output banks (1Y1–1Y18 and 2Y1–2Y18), each controlled by dedicated OE inputs. Input clamping diodes and bus-hold circuitry ensure robust signal integrity on undriven address lines without external components.

Each output drives up to ±12 mA with built-in 26-Ω series termination, reducing overshoot/undershoot in high-speed address buses. The logic diagram confirms active-high A inputs driving complementary Y outputs, with OE1 controlling the first bank and OE2 the second - enabling staggered enable timing or bank isolation in multi-chip select schemes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3 V to 3.6 V - supports mixed-voltage system interfacing with 2.5 V and 3.3 V logic domains.
Propagation Delay (t_pd)	1.7 ns (min) to 3.5 ns (max) at 3.3 V - enables sub-300 MHz address bus operation with tight timing margins.
Output Drive	±12 mA per output - sufficient to drive 50-pF loads across PCB traces without external buffers.
Bus-Hold Current	±75 µA at 3 V - maintains stable logic state on floating inputs without pullup/pulldown resistors.
Input Clamp Diodes	Integrated to V_CC - suppresses >2.5 V input overshoot common in fast-switching address lines.
Power Dissipation Capacitance	53 pF per bit (two outputs switching) - quantifies dynamic power consumption during address transitions.
ESD Rating	2000-V HBM, 200-V MM - exceeds JEDEC standards for handling in automated assembly environments.

Pinout & Package

TSSOP-80 (DBB) package with 1.2 mm max height, 0.4 mm pitch, and exposed thermal pad for enhanced thermal performance in high-density PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
A1–A18	Data Input	18-bit address/data input bus; each pin has bus-hold and V_CC-clamp diode.
1Y1–1Y18	Output Bank 1	First 18-bit 3-state output bank, enabled by OE1 (active-low).
2Y1–2Y18	Output Bank 2	Second 18-bit 3-state output bank, enabled by OE2 (active-low).
OE1, OE2	Output Enable	Independent active-low enables for each output bank; supports staggered or isolated bank activation.
V_CC	Supply	Eight dedicated V_CC pins distributed across package - reduces IR drop and improves noise immunity.
GND	Ground	Twelve GND pins - provides low-inductance return paths for all 36 outputs and internal logic.

Key Features

Feature	Design Value
Integrated 26-Ω Output Series Resistors	Eliminates need for 36 discrete SMT resistors on address bus traces, reducing BOM count and layout area.
Active Bus-Hold Circuitry	Maintains valid logic levels on unused A-inputs without external pull resistors - critical for partial-address decoding.
Dual Independent Output Enables	Allows selective activation of 1Y or 2Y banks - enables time-multiplexed address routing or fault-isolated bank operation.
V_CC-Clamp Input Diodes	Prevents damage from >V_CC + 0.5 V input transients common in hot-plug or long-trace address buses.
Latch-Up Immunity	Exceeds 250 mA per JESD 17 - ensures robust operation in noisy industrial or automotive ECU environments.

Applications

Memory Address Expansion	FPGA I/O Expansion
Use Scenario: Expanding 18-bit microcontroller address bus to drive multiple SRAM or Flash devices with shared data/address multiplexing. IC Role / Device Role / Timing Role: 1-bit-to-2-bit address driver providing two synchronized 18-bit output banks for chip-select and upper/lower address partitioning. Use Value: Dual OE control allows interleaved enable timing between memory banks, reducing address setup/hold violations in high-speed parallel interfaces.	Use Scenario: Routing address signals from a resource-constrained FPGA I/O bank to external peripherals requiring separate address segments. IC Role / Device Role / Timing Role: Level-shifting and fanout buffer for 2.5 V/3.3 V FPGA address outputs driving 50-pF loads across 80-mm PCB traces. Use Value: Built-in 26-Ω series resistors suppress reflections on long traces, eliminating need for external termination and improving signal integrity at >100 MHz.
Industrial PLC Backplane	Test Equipment Address Multiplexing
Use Scenario: Reliable address distribution across modular I/O slots in programmable logic controller backplanes operating at -40°C to 85°C. IC Role / Device Role / Timing Role: Robust address repeater with bus-hold and latch-up immunity, ensuring no floating inputs during hot-swap module insertion/removal. Use Value: 2000-V HBM ESD rating and 250 mA latch-up immunity prevent field failures in electrostatic-prone factory environments.	Use Scenario: Dynamic reconfiguration of test instrument address maps during automated functional testing of multi-DUT boards. IC Role / Device Role / Timing Role: Fast-enable address driver supporting <3.5 ns propagation delay and <5 ns enable/disable times for precise test vector timing. Use Value: Independent OE1/OE2 permits rapid bank switching (<5 ns disable-to-enable) to cycle between DUT address spaces without CPU intervention.

Memory Address Expansion

FPGA I/O Expansion

Use Scenario: Expanding 18-bit microcontroller address bus to drive multiple SRAM or Flash devices with shared data/address multiplexing.

IC Role / Device Role / Timing Role: 1-bit-to-2-bit address driver providing two synchronized 18-bit output banks for chip-select and upper/lower address partitioning.

Use Value: Dual OE control allows interleaved enable timing between memory banks, reducing address setup/hold violations in high-speed parallel interfaces.

Use Scenario: Routing address signals from a resource-constrained FPGA I/O bank to external peripherals requiring separate address segments.

IC Role / Device Role / Timing Role: Level-shifting and fanout buffer for 2.5 V/3.3 V FPGA address outputs driving 50-pF loads across 80-mm PCB traces.

Use Value: Built-in 26-Ω series resistors suppress reflections on long traces, eliminating need for external termination and improving signal integrity at >100 MHz.

Industrial PLC Backplane

Test Equipment Address Multiplexing

Use Scenario: Reliable address distribution across modular I/O slots in programmable logic controller backplanes operating at -40°C to 85°C.

IC Role / Device Role / Timing Role: Robust address repeater with bus-hold and latch-up immunity, ensuring no floating inputs during hot-swap module insertion/removal.

Use Value: 2000-V HBM ESD rating and 250 mA latch-up immunity prevent field failures in electrostatic-prone factory environments.

Use Scenario: Dynamic reconfiguration of test instrument address maps during automated functional testing of multi-DUT boards.

IC Role / Device Role / Timing Role: Fast-enable address driver supporting <3.5 ns propagation delay and <5 ns enable/disable times for precise test vector timing.

Use Value: Independent OE1/OE2 permits rapid bank switching (<5 ns disable-to-enable) to cycle between DUT address spaces without CPU intervention.

Equivalent & Alternatives

The following parts are listed as comparable options for similar address driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALVCH162830GR	Omits bus-hold circuitry; requires external pull resistors on all A inputs.	Suitable only when board-level pull resistors are already present or preferred for design control.	Select if deterministic input biasing is required and bus-hold behavior introduces unwanted hysteresis.
SN74LVC16244ADGGR	16-bit non-inverting buffer (not 1:2 driver); no dual OE; no bus-hold; lower drive (±24 mA).	Used for simple unidirectional bus buffering, not address fanout or bank isolation.	Choose only for legacy LVC-level compatibility where 1:2 expansion and independent bank control are unnecessary.

Compared with SN74ALVCH162830GR and SN74LVC16244ADGGR, the SN74ALVCHS162830GR uniquely combines dual-output-bank architecture, bus-hold, and integrated series termination - making it the only option for compact, resistor-free 18-bit address expansion with independent timing control.

Availability

SN74ALVCHS162830GR is available at Aetrix Electronics and suitable for memory subsystems, FPGA interface designs, industrial PLC backplanes, and automated test equipment requiring stable component supply and long-term manufacturability.

Supply support for SN74ALVCHS162830GR 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 SN74ALVCHS162830GR belongs to TI's Widebus™ family of high-speed, low-voltage CMOS logic devices, engineered specifically for high-density address and data bus expansion in memory-rich embedded systems.

FAQ

What is the function of OE1 and OE2 on the SN74ALVCHS162830GR?

OE1 and OE2 are independent active-low output-enable inputs controlling separate 18-bit output banks: OE1 enables 1Y1–1Y18, and OE2 enables 2Y1–2Y18. This allows staggered activation, bank isolation, or simultaneous control depending on system timing requirements. Both must be low for their respective outputs to drive; high states place outputs in high-impedance mode. The SN74ALVCHS162830GR datasheet specifies that tying either OE to V_CC via a pullup resistor ensures high-impedance during power-up.

Does the SN74ALVCHS162830GR require external pullup or pulldown resistors on its A-inputs?

No - the SN74ALVCHS162830GR integrates active bus-hold circuitry on all A1–A18 inputs, maintaining valid logic states on undriven or floating lines without external resistors. TI explicitly warns against using pullup/pulldown resistors with bus-hold enabled, as they may conflict with the internal hold current (±75 µA at 3 V). This feature simplifies PCB layout and reduces BOM cost in systems with partially used address buses.

What is the maximum capacitive load the SN74ALVCHS162830GR can drive reliably?

The SN74ALVCHS162830GR is characterized for 50-pF loads in its switching specifications, with t_pd and t_dis measured under CL = 50 pF conditions. Its ±12 mA output drive and integrated 26-Ω series resistors provide controlled edge rates suitable for typical PCB trace capacitance (2–5 pF/inch) and connector parasitics. Driving >50 pF may increase propagation delay and overshoot; for heavier loads, verify timing margins using the device's C_pd = 53 pF (per bit) and output impedance model.

How does the SN74ALVCHS162830GR handle input voltage overshoot?

The SN74ALVCHS162830GR includes diodes clamped to V_CC on all A-inputs, limiting input overshoot to V_CC + 0.5 V per absolute maximum ratings. This protects against transient spikes exceeding the supply rail - common in fast-switching address buses with long traces or unterminated stubs. The clamping action activates when VI > V_CC + 0.5 V, sinking current up to 50 mA (I_IK rating), ensuring robustness without external TVS diodes in most industrial applications.

Is the SN74ALVCHS162830GR compatible with 2.5 V and 3.3 V logic families?

Yes - the SN74ALVCHS162830GR operates across 2.3 V to 3.6 V, making it interoperable with both 2.5 V (VIH = 1.7 V min) and 3.3 V (VIH = 2.0 V min) logic families. Its V_OH ≥ V_CC − 0.2 V and V_OL ≤ 0.8 V at 3 V ensures solid noise margins when interfacing with LVT, ALVC, and LVCMOS receivers. The SN74ALVCHS162830GR's wide V_CC range eliminates level-shifters in mixed-voltage memory subsystems.

SN74ALVCHS162830GR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ALVCHS

Package/Case:: 80-TFSOP (0.240", 6.10mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Address Driver

Number of Elements:: 1

Number of Bits per Element:: 1:2

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 12mA, 12mA

Voltage - Supply:: 2.3V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 80-TSSOP

SN74ALVCHS162830GR FAQ

1.How can I place an order for SN74ALVCHS162830GR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74ALVCHS162830GR 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 SN74ALVCHS162830GR reliable?

The price and inventory of SN74ALVCHS162830GR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVCHS162830GR is usually 5 days.

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SN74ALVCHS162830GR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74ALVCHS162830GR 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 SN74ALVCHS162830GR?

For technical support, including SN74ALVCHS162830GR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVCHS162830GR requirements.

6.How does Aetrix verify that SN74ALVCHS162830GR is sourced from the original manufacturer or authorized distributors?

All SN74ALVCHS162830GR 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 SN74ALVCHS162830GR meets industry standards.

7.What is the process for return or replacement of SN74ALVCHS162830GR?

All SN74ALVCHS162830GR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVCHS162830GR, 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 SN74ALVCHS162830GR part is unused and in its original packaging.

Return procedure for SN74ALVCHS162830GR:

1.Submit a request within 90 days.

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

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