My Inquiry
My Account
Texas Instruments 74ACT16245DLR
- Part No.:
- 74ACT16245DLR
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ACT16245DLR.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,686
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74ACT16245DLR from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous two-way data communication between parallel buses in industrial and embedded systems. It operates from 4.5 V to 5.5 V, supports –40°C to 85°C ambient temperature, delivers ±24 mA output drive, and features flow-through pinout for optimized PCB layout.
For engineers reviewing the 74ACT16245DLR datasheet, 74ACT16245DLR pinout, 74ACT16245DLR application, or 74ACT16245DLR equivalent, key selection criteria include bidirectional data direction control (DIR), independent output-enable (G), TTL-compatible inputs, 3-state isolation behavior, and SSOP-48 package compatibility with high-density routing constraints.
Technical Context
The 74ACT16245DLR implements dual-octal transceiver logic with separate DIR and G controls per 8-bit port pair, enabling independent A→B or B→A data flow. Its EPIC™ 1-μm CMOS process ensures TTL-voltage compatibility at inputs and low-noise switching via distributed VCC/GND pins.
Timing is governed by propagation delays under 11.5 ns (tPLH/tPHL) and enable/disable transitions under 12.7 ns (tPZL/tPHZ). The device uses flow-through architecture-inputs on one side, outputs on the opposite-to minimize trace crossovers and signal integrity degradation in high-speed bus interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V TTL/CMOS logic rails without level-shifting. |
| Operating Temperature | –40°C to +85°C - qualified for commercial and industrial ambient environments. |
| Output Drive | ±24 mA - sufficient to directly drive terminated 50-Ω transmission lines or multiple TTL loads. |
| Propagation Delay | ≤11.5 ns - enables reliable operation in 20-MHz+ synchronous bus systems. |
| Power Dissipation | 1.2 W (DL package) - manageable with standard PCB copper pour; no forced-air cooling required. |
| Input Compatibility | TTL-voltage - accepts 0.8 V / 2.0 V logic thresholds, eliminating need for external translators. |
| 3-State Leakage | ±5 μA (IOZ) - ensures robust bus isolation during disable mode with minimal standby current. |
Pinout & Package
74ACT16245DLR is housed in a 48-pin Shrink Small-Outline Package (SSOP-DL), 300-mil body width, 0.5-mm pitch, 1.2-mm max height, RoHS-compliant NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Determines data flow direction per octal bank: DIR = L → B-to-A; DIR = H → A-to-B. |
| 1G, 2G | Output Enable Input | Active-low; G = L enables transceiver; G = H forces all outputs into high-impedance state. |
| 1A1–1A8, 2A1–2A8 | Port A Inputs/Outputs | First and second octal data terminals on A-side bus; bidirectional when enabled. |
| 1B1–1B8, 2B1–2B8 | Port B Inputs/Outputs | First and second octal data terminals on B-side bus; bidirectional when enabled. |
| VCC (Pins 7, 18, 29, 40) | Power Supply | Distributed VCC pins reduce simultaneous switching noise and improve power integrity. |
| GND (Pins 4, 11, 22, 33, 44) | Ground Reference | Five dedicated ground pins minimize ground bounce and enhance signal return path stability. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input and output pins placed on opposite sides of package to eliminate layer jumps and reduce crosstalk in dense PCB layouts. |
| Distributed VCC/GND | Four VCC and five GND pins suppress high-speed switching noise and maintain stable rail voltage across the die. |
| EPIC™ 1-μm CMOS process | Delivers TTL-compatible input thresholds and 500-mA latch-up immunity at 125°C for robust system-level reliability. |
| 3-state output isolation | Enables true bus sharing: disabled ports present <±5 μA leakage, preventing contention or back-driving. |
| Widebus™ family compatibility | Shares timing, drive strength, and pinout conventions with TI's 16-bit Widebus transceivers for design reuse. |
Applications
| Industrial PLC Backplane | Embedded Data Acquisition System |
|---|---|
Use Scenario: Bidirectional data exchange between CPU module and I/O expansion cards across a 16-bit parallel backplane. IC Role / Device Role / Timing Role: Bus transceiver managing real-time sensor read/write cycles and command forwarding with sub-12-ns latency. Use Value: Flow-through pinout allows direct layer routing without vias; 3-state isolation prevents bus contention during hot-swap events. | Use Scenario: Interfacing an FPGA-based acquisition controller with legacy ADC/DAC modules using shared 16-bit data bus. IC Role / Device Role / Timing Role: Direction-controlled bridge synchronizing burst-mode sampling data transfers while isolating unused peripherals. Use Value: ±24 mA drive sustains signal integrity over 15-cm traces; TTL compatibility eliminates level-shifter components. |
| Test Equipment Mainframe | Automated Manufacturing Controller |
Use Scenario: Modular instrument chassis where measurement modules dynamically connect/disconnect from central bus under software control. IC Role / Device Role / Timing Role: Isolation gate enabling safe hot-plug insertion/removal of modules without disrupting active bus traffic. Use Value: Low 3-state leakage (<5 μA) guarantees zero current injection into powered-down modules during reconfiguration. | Use Scenario: Real-time motion control system coordinating servo drives, safety I/O, and HMI via centralized 16-bit parallel interconnect. IC Role / Device Role / Timing Role: Synchronized data relay between motion processor and peripheral interface ASICs with deterministic delay. Use Value: Distributed power/ground pins suppress noise coupling into analog feedback paths during high-current switching events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ACT16245DGGR | TSSOP-48 package (24.4 mm wide); 0.65-mm pitch; lower thermal resistance (0.85 W max). | Better suited for space-constrained designs requiring finer pitch and higher density; same electrical specs. | Select DGGR for new designs prioritizing board area reduction and automated assembly compatibility. |
| SN74ABT16245DGG | ABT-family; higher drive (±64 mA); faster tPLH/tPHL (≤5.5 ns); 4.5–5.5 V supply. | Required where legacy 74ACT timing margins are insufficient or heavier bus loading exists. | Choose ABT variant only if measured bus rise/fall times exceed ACT limits or load capacitance exceeds 50 pF per line. |
Compared with 74ACT16245DLR, the DGGR offers identical functionality in a narrower TSSOP package ideal for compact layouts, while the SN74ABT16245DGG provides significantly higher drive strength and speed at the cost of increased power and noise sensitivity-making it suitable only when ACT performance is inadequate.
Availability
74ACT16245DLR is available at Aetrix Electronics and suitable for industrial PLC backplanes, embedded data acquisition systems, and automated manufacturing controllers requiring stable component supply across extended product lifecycles.
Supply support for 74ACT16245DLR 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 delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The 74ACT16245DLR belongs to TI's Widebus™ family of high-speed bus interface ICs, engineered specifically for noise-resilient, low-latency parallel data transfer in mission-critical industrial control and instrumentation systems.
FAQ
What is the maximum operating temperature range for the 74ACT16245DLR?
The 74ACT16245DLR is characterized for operation from –40°C to +85°C. This commercial-industrial temperature grade makes it suitable for use in factory automation equipment, test instrumentation, and embedded controllers deployed in non-hermetic enclosures without active thermal management.
Does the 74ACT16245DLR require external pull-up resistors on control inputs?
Yes - unused DIR or G inputs on the 74ACT16245DLR must be tied to VCC through a pull-up resistor of approximately 5 kΩ or greater. Floating control inputs may cause undefined output states, increased ICC, or erratic bus behavior due to internal noise coupling.
Can the 74ACT16245DLR drive a 50-Ω transmission line directly?
Yes - the 74ACT16245DLR delivers ±24 mA output current, which supports direct driving of properly terminated 50-Ω lines at 5 V. Measured VOL ≤ 0.44 V and VOH ≥ 3.94 V at 24 mA ensure adequate noise margin for TTL- and CMOS-compatible receivers.
Is the 74ACT16245DLR pin-compatible with other Widebus transceivers?
Yes - the 74ACT16245DLR shares identical pinout, function mapping, and timing behavior with other DL-packaged Widebus 16-bit transceivers including SN74ACT16244DLR and SN74ACT16373DLR, enabling drop-in replacement within the same package footprint and PCB layout.
What is the meaning of "flow-through architecture" in the 74ACT16245DLR datasheet?
Flow-through architecture in the 74ACT16245DLR places all Port A signals on one side of the SSOP-48 package and all Port B signals on the opposite side. This eliminates trace crossovers on PCBs, reduces layer count, improves signal integrity, and simplifies high-speed bus routing without requiring vias or serpentine compensation.
74ACT16245DLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ACT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
74ACT16245DLR FAQ
1.How can I place an order for 74ACT16245DLR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT16245DLR 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 74ACT16245DLR reliable?
The price and inventory of 74ACT16245DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT16245DLR is usually 5 days.
3.What payment methods are accepted for 74ACT16245DLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT16245DLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT16245DLR?
74ACT16245DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT16245DLR 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 74ACT16245DLR?
For technical support, including 74ACT16245DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT16245DLR requirements.
6.How does Aetrix verify that 74ACT16245DLR is sourced from the original manufacturer or authorized distributors?
All 74ACT16245DLR 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 74ACT16245DLR meets industry standards.
7.What is the process for return or replacement of 74ACT16245DLR?
All 74ACT16245DLR units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT16245DLR, 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 74ACT16245DLR part is unused and in its original packaging.
Return procedure for 74ACT16245DLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74ACT16245DLR Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
