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Texas Instruments SN74AUC16245ZQLR

Name: SN74AUC16245ZQLR
Brand: Texas Instruments
SKU: SN74AUC16245ZQLR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74AUC16245ZQLR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 56-VFBGA

Datasheet:: SN74AUC16245ZQLR.pdf

Description:: IC TXRX NON-INVERT 2.7V 56BGA

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Product details

Overview

SN74AUC16245ZQLR from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver optimized for 1.8-V operation, featuring 3.6-V I/O tolerance, 2 ns max propagation delay at 1.8 V, ±8-mA output drive, and Ioff support for partial-power-down mode. It enables bidirectional asynchronous data transfer between A and B buses in low-voltage memory and logic interface applications.

For engineers reviewing the SN74AUC16245ZQLR datasheet, SN74AUC16245ZQLR pinout, SN74AUC16245ZQLR application, or SN74AUC16245ZQLR equivalent, key selection criteria include its sub-1-V operability (0.8–2.7 V), 20-µA max ICC, JESD 78 Class II latch-up rating (>100 mA), and VFBGA-48 (GQL) package compatibility with high-density PCB layouts.

Technical Context

This device implements two independent 8-bit bidirectional data paths controlled by separate DIR and OE inputs per section, enabling flexible A↔B or B↔A data routing without external timing constraints. Its CMOS design supports mixed-mode signal operation via 3.6-V tolerant I/Os while operating from a single 0.8–2.7-V supply.

The Ioff circuitry actively disables outputs during power-down to prevent backflow current, and input transition rate is specified at 5 ns/V - critical for noise immunity in fast-switching digital systems. All unused inputs must be tied to VCC or GND to avoid floating-node instability.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	0.8 V to 2.7 V - supports ultra-low-voltage operation down to sub-1-V logic domains.
Max tpd	2 ns at 1.8 V - enables high-speed interconnect in DDR memory buffers and FPGA I/O expansion.
Output Drive	±8 mA at 1.8 V - sufficient to drive 50-Ω transmission lines or fan-out to ≥10 LVTTL loads.
Ioff Support	Enabled - isolates powered-down sections to prevent current leakage in partial-power-down systems.
IOH/VOL	−8 mA / 0.45 V at 1.65 V - ensures robust logic-high and logic-low margins under load.
ESD Rating	2000-V HBM - meets industrial-grade ESD resilience without external protection diodes.
ICC Max	20 µA - minimizes quiescent power in battery-backed or always-on subsystems.

Pinout & Package

VFBGA-48 (GQL) package: 5 mm × 6 mm, 0.5-mm pitch, bottom-terminal array with exposed thermal pad; JEDEC MO-153 compliant; MSL Level-1 (260°C peak reflow).

Pin/Terminal	Circuit Role	Design Meaning
1DIR, 2DIR	Direction control input (per 8-bit section)	Determines data flow direction: DIR = L → B-to-A; DIR = H → A-to-B.
1OE, 2OE	Output enable input (active-low, per section)	OE = L enables transceiver; OE = H places outputs in high-impedance state.
1A1–1A8, 2A1–2A8	Section A data terminals	Connect to source bus (e.g., processor or FPGA side); 16 total A-side I/Os.
1B1–1B8, 2B1–2B8	Section B data terminals	Connect to destination bus (e.g., memory or peripheral side); 16 total B-side I/Os.
VCC, GND	Power and ground	Eight VCC and eight GND pins distributed across package for low-impedance supply delivery and noise reduction.

Key Features

Feature	Design Value
1.8-V optimized performance	2 ns max tpd and ±8-mA drive at nominal 1.8 V - delivers speed/power balance for modern low-voltage SoC interfaces.
3.6-V I/O tolerance	Allows safe interfacing with legacy 3.3-V peripherals without level shifters - reduces BOM count and layout complexity.
Ioff partial-power-down	Prevents damaging back-current when VCC = 0 V - essential for hot-swap and dynamic power-gating architectures.
Latch-up immunity	>100 mA per JESD 78 Class II - ensures reliability in noisy industrial environments with transient coupling.
Low input capacitance	3 pF typical Ci - minimizes loading on driving gates and preserves signal integrity in high-frequency traces.

Applications

DDR Memory Interface	FPGA I/O Expansion
Use Scenario: Bidirectional data buffering between FPGA fabric and DDR SDRAM chips operating at 1.8 V. IC Role / Device Role / Timing Role: Bus transceiver managing A/B bus directionality synchronized with FPGA-controlled DIR/OE signals. Use Value: 2 ns propagation delay enables tight timing closure at DDR2/DDR3 data rates; 3.6-V I/O tolerance accommodates 3.3-V configuration EEPROMs on same bus.	Use Scenario: Extending limited FPGA GPIO count to drive multiple peripheral modules (ADCs, sensors, displays). IC Role / Device Role / Timing Role: Level-shifting and fan-out buffer translating FPGA core voltage (1.2–1.8 V) to peripheral I/O standards. Use Value: Sub-1-V operability supports next-gen FPGA core voltages; Ioff prevents backfeed when peripherals power up/down independently.
Low-Power MCU Peripherals	Industrial Control Backplane
Use Scenario: Interfacing ultra-low-power ARM Cortex-M microcontrollers (0.9–1.2 V core) with 1.8-V sensor hubs or RF transceivers. IC Role / Device Role / Timing Role: Voltage-aware bidirectional bridge ensuring signal integrity across mixed-supply domains. Use Value: 20-µA max ICC contributes negligibly to system standby current; 5 ns/V input slew rate rejects fast-edge noise in noisy embedded environments.	Use Scenario: Isolating PLC CPU module I/O from fieldbus slave nodes using shared backplane wiring. IC Role / Device Role / Timing Role: Hot-swap-capable bus isolator enabling live insertion/removal of slave cards without disrupting CPU communication. Use Value: Ioff and 2000-V HBM ESD rating protect against field-induced transients; distributed VCC/GND pins suppress ground bounce in multi-drop configurations.

DDR Memory Interface

FPGA I/O Expansion

Use Scenario: Bidirectional data buffering between FPGA fabric and DDR SDRAM chips operating at 1.8 V.

IC Role / Device Role / Timing Role: Bus transceiver managing A/B bus directionality synchronized with FPGA-controlled DIR/OE signals.

Use Value: 2 ns propagation delay enables tight timing closure at DDR2/DDR3 data rates; 3.6-V I/O tolerance accommodates 3.3-V configuration EEPROMs on same bus.

Use Scenario: Extending limited FPGA GPIO count to drive multiple peripheral modules (ADCs, sensors, displays).

IC Role / Device Role / Timing Role: Level-shifting and fan-out buffer translating FPGA core voltage (1.2–1.8 V) to peripheral I/O standards.

Use Value: Sub-1-V operability supports next-gen FPGA core voltages; Ioff prevents backfeed when peripherals power up/down independently.

Low-Power MCU Peripherals

Industrial Control Backplane

Use Scenario: Interfacing ultra-low-power ARM Cortex-M microcontrollers (0.9–1.2 V core) with 1.8-V sensor hubs or RF transceivers.

IC Role / Device Role / Timing Role: Voltage-aware bidirectional bridge ensuring signal integrity across mixed-supply domains.

Use Value: 20-µA max ICC contributes negligibly to system standby current; 5 ns/V input slew rate rejects fast-edge noise in noisy embedded environments.

Use Scenario: Isolating PLC CPU module I/O from fieldbus slave nodes using shared backplane wiring.

IC Role / Device Role / Timing Role: Hot-swap-capable bus isolator enabling live insertion/removal of slave cards without disrupting CPU communication.

Use Value: Ioff and 2000-V HBM ESD rating protect against field-induced transients; distributed VCC/GND pins suppress ground bounce in multi-drop configurations.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AVC16245DGGR	Higher VCC range (1.2–3.6 V); 3.3-V optimized; 3.5 ns tpd at 1.8 V	Better suited for mixed 3.3-V/1.8-V systems where higher drive strength (±12 mA) is needed	Select when interfacing with 3.3-V peripherals requiring stronger drive or wider supply margin.
SN74LVC16245ADGGR	Wider VCC (1.65–3.6 V); 4.2 ns tpd at 1.8 V; no sub-1-V operation	Lower cost; suitable for legacy 3.3-V designs with relaxed timing budgets	Choose for cost-sensitive industrial controls where 1.8-V optimization and sub-1-V operation are unnecessary.

Compared with SN74AUC16245ZQLR, SN74AVC16245DGGR trades 1.5 ns speed for broader voltage flexibility and higher drive, while SN74LVC16245ADGGR sacrifices speed and low-voltage capability for cost and maturity - making SN74AUC16245ZQLR optimal for new 1.8-V–centric designs demanding minimal latency and power.

Availability

SN74AUC16245ZQLR is available at Aetrix Electronics and suitable for DDR memory interfaces, FPGA I/O expansion, low-power MCU peripherals, and industrial control backplanes requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for SN74AUC16245ZQLR 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 connectivity technologies, with over 90 years of innovation in high-reliability silicon solutions.

The SN74AUC16245ZQLR belongs to TI's Widebus™ family of high-speed logic devices, engineered specifically for low-voltage, high-density digital interface applications in portable, industrial, and communications equipment.

FAQ

What is the minimum operating voltage for SN74AUC16245ZQLR?

The SN74AUC16245ZQLR operates down to 0.8 V, enabling compatibility with emerging ultra-low-power microcontrollers and FPGAs that scale core voltage below 1.0 V. This sub-1-V capability is confirmed in the recommended operating conditions table of the SCES392E datasheet and distinguishes SN74AUC16245ZQLR from standard LVC or AVC variants.

Does SN74AUC16245ZQLR support hot-swap or partial-power-down operation?

Yes, SN74AUC16245ZQLR features Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow during hot-insertion or staged power sequencing. This behavior is explicitly characterized in the electrical characteristics table and validated per JESD 78 Class II latch-up testing.

What package type is used for SN74AUC16245ZQLR?

SN74AUC16245ZQLR uses the VFBGA-48 (GQL) package: a 5 mm × 6 mm, 0.5-mm pitch ball grid array with 48 I/O balls and an exposed thermal pad. Package mechanical data is documented in TI's MPDS006C and MTSS003D drawings, and it complies with JEDEC MO-153.

Can SN74AUC16245ZQLR interface directly with 3.3-V devices?

Yes, SN74AUC16245ZQLR has 3.6-V tolerant I/Os, allowing direct connection to 3.3-V peripherals without external level shifters. Input and output voltage ratings extend to −0.5 V to 3.6 V, and this tolerance is guaranteed across the full operating temperature range (−40°C to 85°C).

What is the maximum propagation delay of SN74AUC16245ZQLR at 1.8 V?

The maximum propagation delay (tpd) of SN74AUC16245ZQLR is 2 ns at VCC = 1.8 V ± 0.15 V, as specified in the switching characteristics table of the SCES392E datasheet. This value applies to both A→B and B→A data paths under loaded conditions (CL = 30 pF).

SN74AUC16245ZQLR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74AUC

Package/Case:: 56-VFBGA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Transceiver, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 8

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 9mA, 9mA

Voltage - Supply:: 0.8V ~ 2.7V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-BGA Microstar Junior (7x4.5)

SN74AUC16245ZQLR FAQ

1.How can I place an order for SN74AUC16245ZQLR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74AUC16245ZQLR 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 SN74AUC16245ZQLR reliable?

The price and inventory of SN74AUC16245ZQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC16245ZQLR is usually 5 days.

3.What payment methods are accepted for SN74AUC16245ZQLR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC16245ZQLR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74AUC16245ZQLR?

SN74AUC16245ZQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74AUC16245ZQLR 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 SN74AUC16245ZQLR?

For technical support, including SN74AUC16245ZQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC16245ZQLR requirements.

6.How does Aetrix verify that SN74AUC16245ZQLR is sourced from the original manufacturer or authorized distributors?

All SN74AUC16245ZQLR 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 SN74AUC16245ZQLR meets industry standards.

7.What is the process for return or replacement of SN74AUC16245ZQLR?

All SN74AUC16245ZQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC16245ZQLR, 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 SN74AUC16245ZQLR part is unused and in its original packaging.

Return procedure for SN74AUC16245ZQLR:

1.Submit a request within 90 days.

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

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