SN74BCT573DWR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74BCT573DWR is an 8-bit D-type transparent latch with 3-state outputs by Texas Instruments, featuring BCT logic for high-speed bus interfacing. Key specs: 8-channel 1:1 latch, tri-state outputs, 20-SOIC package, 50 pF load capacitance. From competitive pricing, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74BCT573DWR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit transparent D-type latch with tri-state outputs enables efficient bus isolation and data buffering on shared buses
- BCT (BiCMOS) logic family delivers high-speed operation with CMOS-compatible inputs and TTL drive capability
- Active-low output enable (OE) allows simple bus management with multiple devices on the same data bus
- Broadside pinout (DW package) simplifies PCB routing with inputs and outputs on opposite sides of the package
- Flow-through architecture with 20-pin SOIC package supports compact surface-mount designs with high packing density
Applications
The SN74BCT573DWR is designed for use in high-speed bus buffering, address latching, and data pipeline stages in microprocessor-based systems and memory interfaces. It is commonly deployed in industrial computers, networking equipment, and embedded systems where 8-bit data must be reliably latched and tri-stated onto shared buses. Its BCT logic technology ensures compatibility with both TTL and CMOS logic levels, making it versatile for mixed-logic environments.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | BROADSIDE VERSION OF 373 |
| Control Type | ENABLE LOW/HIGH |
| Count Direction | UNIDIRECTIONAL |
| Family | BCT/FBT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.064A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 62mA |
| Prop. Delay@Nom-Sup | 9.6ns |
| Propagation Delay (tpd) | 8.1ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74BCT573DWR:
Frequently Asked Questions
What is the difference between the SN74BCT573 and the SN74LS373?
The SN74BCT573DWR is the broadside version of the 373, with input and output pins arranged on opposite sides of the package to simplify PCB routing. The BCT family also provides higher speed and BiCMOS technology for better drive strength and CMOS input compatibility compared to the older LS373.
What does the tri-state output feature of the SN74BCT573DWR enable?
The tri-state outputs allow the device to disconnect its output drivers from the bus when the active-low output enable (OE) pin is deasserted, placing all 8 outputs in a high-impedance state. This is essential for systems where multiple devices share the same data or address bus.
What package does the SN74BCT573DWR come in?
The device comes in a 20-pin wide-body Small Outline IC (SOIC) package (DWR suffix), which is a standard surface-mount form factor. The DWR variant is supplied on tape and reel, making it suitable for high-volume automated assembly processes.
What is the maximum load capacitance specified for this device?
The SN74BCT573DWR is characterized with a load capacitance (CL) of 50 pF, which is the standard test condition for propagation delay and output timing specifications. Driving heavier capacitive loads will increase propagation delays and should be accounted for in timing budgets.
What are typical applications for the SN74BCT573DWR?
Typical applications include address and data bus latching in microprocessor systems, I/O port expansion, memory interface buffering, and industrial controllers. Its unidirectional 8-bit architecture and enable control make it ideal for demultiplexing address/data buses or isolating subsystem buses in complex digital designs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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