Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics 74VHC16245TTR

Name: 74VHC16245TTR
Brand: STMicroelectronics
SKU: 74VHC16245TTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 74VHC16245TTR

Manufacturer:: STMicroelectronics

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-TFSOP (0.240", 6.10mm Width)

Datasheet:: 74VHC16245TTR.pdf

Description:: IC TXRX NON-INVERT 5.5V 48TSSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,732

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

74VHC16245TTR from STMicroelectronics is a 16-bit non-inverting bus transceiver with 3-state outputs, designed for bidirectional asynchronous data bus interfacing between independent logic domains. It features 4.0 ns typical propagation delay at 5V, ±8 mA symmetrical output drive, 2V–5.5V operating voltage, and 2 kV ESD protection-used in industrial backplane buffers and FPGA I/O expansion.

For engineers reviewing the 74VHC16245TTR datasheet, 74VHC16245TTR pinout, 74VHC16245TTR application, or 74VHC16245TTR equivalent, key selection criteria include directional control timing (DIR setup/hold), 3-state enable skew (tPZL/tPLZ), bus isolation leakage (<0.25 µA), VCC range compatibility, and TSSOP-48 thermal performance under sustained 8 mA per output loading.

Technical Context

This device implements dual 8-bit bidirectional data paths controlled by separate DIR and G inputs per side, enabling independent direction and enable control for A→B and B→A transfers. Each port supports true 3-state output disable with power-down protection on all I/Os during high-impedance states.

It uses sub-micron C2MOS technology to achieve balanced tPLH ≅ tPHL propagation delays and low dynamic noise (VOLP ≤ 0.9 V at 5V/50 pF). Input thresholds are rail-proportional (VIH = 0.7VCC, VIL = 0.3VCC), ensuring robust noise immunity across the full 2V–5.5V supply range.

Key Specifications

Parameter	Value and Actual Design Meaning
Propagation Delay	4.0 ns typ. at VCC = 5V, CL = 15 pF - enables >100 MHz bus handshaking in synchronous systems
Supply Voltage Range	2.0 V to 5.5 V - interoperable with 3.3 V and 5 V logic families without level shifters
Output Drive Strength	±8 mA min. - drives standard CMOS loads (≤10 TTL units) with <0.55 V VOL at 8 mA
Input Thresholds	VIH = 0.7VCC, VIL = 0.3VCC - provides 28% VCC noise margin across full VCC range
Quiescent Current	4 µA max. at TA = 25°C - supports low-power standby in battery-backed systems
ESD Protection	2 kV HBM - eliminates need for external transient suppression on board-level I/O traces
Bus Isolation Leakage	±0.25 µA max. at VCC = 5.5 V - ensures signal integrity when ports are in high-Z state

Pinout & Package

TSSOP-48 package: 12.6 mm × 8.1 mm body, 0.5 mm pitch, 1.2 mm height, lead-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 24	DIR (Direction Control)	Active-High control for A↔B data flow direction per port; determines whether A drives B or B drives A
4, 10, 15, 21, 28, 34, 39, 45	GND	Eight dedicated ground pins reduce ground bounce and improve simultaneous switching noise (SSN) margin
7, 18, 31, 42	VCC	Four distributed power pins ensure uniform supply distribution and minimize IR drop across die
48, 25	G (Output Enable)	Active-Low global enable per port; asserts high-impedance on all 8 associated I/Os when HIGH
2–3, 5–6, 8–9, 11–12, 26–27, 29–30, 32–33, 35–36, 38, 40–41, 43–44, 46–47	A/B Data I/O	16 bidirectional data lines split as two 8-bit groups (1A–1B and 2A–2B); each pin functions as input or output based on DIR/G state

Key Features

Feature	Design Value
Symmetrical Output Impedance	\|IOH\| = \|IOL\| ≥ 8 mA - ensures matched rise/fall times and minimal signal distortion on shared buses
Balanced Propagation Delays	tPLH ≅ tPHL - reduces duty cycle distortion in clock-forwarding or strobe-synchronized applications
Power-Down Protection	Inputs/outputs remain high-Z and clamp-safe when VCC = 0 V - prevents back-driving of powered subsystems
Improved Latch-Up Immunity	Qualified per JEDEC JESD78 - withstands >100 mA injected current without destructive latch-up
Low Dynamic Noise	VOLP ≤ 0.9 V at 5V/50 pF - limits ground bounce and crosstalk in dense PCB layouts

Applications

Industrial Backplane Interface

FPGA I/O Expansion

Use Scenario: Interfacing multiple PLC modules over a 16-bit parallel backplane with mixed 3.3 V and 5 V subsystems.

IC Role / Device Role / Timing Role: Bidirectional level-tolerant bus buffer with independent DIR/G control per segment to isolate fault domains.

Use Value: Eliminates external level shifters while maintaining <4 ns inter-port skew for deterministic cycle timing.

Use Scenario: Extending FPGA GPIO count via parallel peripheral attachment (e.g., SRAM, display controllers, ADC interfaces).

IC Role / Device Role / Timing Role: 3-state bus transceiver managing data flow between FPGA fabric and off-chip memory-mapped peripherals.

Use Value: Supports 100+ MHz burst transfers with guaranteed tPZH ≤ 10 ns and VOLP < 0.9 V to preserve signal integrity.

Automotive Body Control Module

Test Equipment Digital I/O Card

Use Scenario: Isolating microcontroller UART/SPI buses from high-noise actuator driver circuits in BCM designs.

IC Role / Device Role / Timing Role: Directionally gated data isolator with ESD-hardened I/Os meeting ISO 10605 requirements.

Use Value: 2 kV HBM rating and 28% VCC noise margin prevent spurious resets during load dump transients.

Use Scenario: Configurable digital stimulus/response channel in automated test equipment requiring programmable bus directionality.

IC Role / Device Role / Timing Role: Reconfigurable 16-bit I/O buffer supporting both DUT driving and response capture modes.

Use Value: Independent DIR/G per port enables real-time mode switching without bus contention or glitch generation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit bidirectional bus transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16245ADGGR	Lower VCC range (1.65–3.6 V), 3.3 V optimized; tPD = 4.6 ns typ. at 3.3 V	Not suitable for 5 V legacy systems; requires external level translation if interfacing 5 V peripherals	Select when system operates exclusively at 3.3 V and lower static power (<1 µA ICC) is critical
74ALVC16245PW	Wider VCC range (1.65–3.6 V), higher speed (tPD = 3.2 ns typ.), but no 5 V tolerance	Cannot interface directly with 5 V logic; lacks 2 kV ESD rating (only 200 V HBM)	Prefer for high-speed 3.3 V-only designs where ESD robustness is managed externally

Compared with SN74LVC16245ADGGR and 74ALVC16245PW, the 74VHC16245TTR uniquely supports 5 V operation with 2 kV ESD hardening and balanced 2V–5.5V thresholds-making it the only option for mixed-voltage industrial backplanes requiring intrinsic robustness without added protection circuitry.

Availability

74VHC16245TTR is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA I/O expansion, automotive body control modules, and test equipment digital I/O cards requiring stable component supply across extended temperature ranges (–55°C to +125°C).

Supply support for 74VHC16245TTR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management ICs with vertical manufacturing capability and AEC-Q100 qualification expertise.

The 74VHC series targets high-speed, low-power CMOS logic applications demanding rail-to-rail voltage compatibility, robust noise immunity, and industrial-grade reliability-particularly in mixed-supply embedded systems.

FAQ

What is the maximum recommended capacitive load for reliable 74VHC16245TTR operation?

The device is characterized up to 50 pF load capacitance per output, with propagation delay and skew parameters guaranteed at CL = 15 pF and CL = 50 pF. Driving >50 pF may increase tPLH/tPHL beyond 10 ns and elevate VOLP above 0.9 V, risking timing violations or ground bounce in high-speed systems.

Can 74VHC16245TTR operate with VCC = 2.3 V while interfacing with 3.3 V logic?

Yes-its VIH = 0.7VCC and VIL = 0.3VCC thresholds scale with supply voltage. At VCC = 2.3 V, VIH = 1.61 V and VIL = 0.69 V, which safely interface with 3.3 V logic outputs (VOH ≥ 2.4 V, VOL ≤ 0.4 V) without level shifters, provided output drive strength meets load requirements.

How does the power-down protection feature behave when VCC is removed?

When VCC = 0 V, all inputs and outputs enter high-impedance state with clamping diodes disabled, preventing current backflow into unpowered sections. This avoids unintended powering of downstream circuits and complies with IEC 61000-4-2 system-level ESD immunity requirements.

Is the 74VHC16245TTR pinout compatible with other 16-bit transceivers in TSSOP-48 packages?

No-pin assignments differ significantly across manufacturers. For example, DIR and G signals are placed on pins 1/24/48/25 in this STMicro part, whereas TI's SN74LVC16245ADGGR places DIR on pins 1/2 and G on pins 3/4. Physical pin compatibility does not imply functional or electrical equivalence.

74VHC16245TTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74VHC

Package/Case:: 48-TFSOP (0.240", 6.10mm Width)

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:: 8mA, 8mA

Voltage - Supply:: 2V ~ 5.5V

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

74VHC16245TTR FAQ

1.How can I place an order for 74VHC16245TTR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74VHC16245TTR 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 74VHC16245TTR reliable?

The price and inventory of 74VHC16245TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC16245TTR is usually 5 days.

3.What payment methods are accepted for 74VHC16245TTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC16245TTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74VHC16245TTR?

74VHC16245TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74VHC16245TTR 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 74VHC16245TTR?

For technical support, including 74VHC16245TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC16245TTR requirements.

6.How does Aetrix verify that 74VHC16245TTR is sourced from the original manufacturer or authorized distributors?

All 74VHC16245TTR 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 74VHC16245TTR meets industry standards.

7.What is the process for return or replacement of 74VHC16245TTR?

All 74VHC16245TTR units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC16245TTR, 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 74VHC16245TTR part is unused and in its original packaging.

Return procedure for 74VHC16245TTR:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…