SN74ACT573DW Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments SN74ACT573DW is an 8-bit octal D-type transparent latch with 3-state outputs, operating at 4.5–5.5V in a 20-pin SOIC package. Features enable-low control, 24mA output drive, and 50pF load capacitance. From $0.44, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ACT573DW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4447(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74ACT573DW?
- 8-bit octal D-type transparent latch with active-low output enable for flexible bus control
- 3-state outputs supporting high-impedance mode for multi-device bus sharing
- ACT-family CMOS logic with 24mA (IOL) output drive strength and 4.5–5.5V supply range
- 20-pin SOIC (SOIC-20) package with 50pF load capacitance rating for reliable signal integrity
- JESD-609 e4 compliant (lead-free) with unidirectional count direction suitable for data bus buffering
What is SN74ACT573DW used for?
The SN74ACT573DW is widely used in data bus buffering and address latching applications in microprocessor and microcontroller systems. Its 3-state outputs make it ideal for shared-bus architectures in memory interfaces, FPGA I/O expansion, and industrial control boards. The ACT-family speed and CMOS compatibility also suit it for mixed-voltage logic interfacing and high-density PCB designs.
What are the specifications of SN74ACT573DW?
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | ACT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 8 |
| Number of Functions | 8 |
| 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 | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 12ns |
| Propagation Delay (tpd) | 12ns |
| 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 | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Where can I find the SN74ACT573DW datasheet?
SN74ACT573DW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ACT573DW?
Compatible alternatives and drop-in replacements for SN74ACT573DW:
Frequently Asked Questions
What is the SN74ACT573DW and what are its key electrical parameters?
The SN74ACT573DW is an 8-bit octal D-type transparent latch from Texas Instruments. It operates from a 4.5V to 5.5V supply, features active-low output enable (3-state), 24mA sink current (IOL), and is rated for 50pF load capacitance. It belongs to the ACT logic family and comes in a 20-pin SOIC package.
What are the typical applications for the SN74ACT573DW?
The SN74ACT573DW is commonly used in address latching and data bus buffering in microprocessor systems. Its 3-state output capability makes it well suited for shared-bus designs, memory address hold circuits, FPGA I/O expansion, and industrial control systems requiring reliable 8-bit parallel data storage.
What package does the SN74ACT573DW come in, and are there pin-compatible alternatives?
The SN74ACT573DW is housed in a 20-pin SOIC (SOIC-20) wide-body package. Pin-compatible alternatives include the SN74ACT573DBR (SSOP-20), SN74ACT573PW (TSSOP-20), and the 74HCT573 / 74FCT573 series from other manufacturers, all sharing the standard octal latch pinout.
How does the enable-low control work on the SN74ACT573DW?
The SN74ACT573DW uses an active-low output enable (OE) pin. When OE is held low, the Q outputs reflect the latched data and are driven normally. When OE is high, all 8 outputs enter a high-impedance (3-state) mode, effectively disconnecting the device from the bus without affecting the stored latch data.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9800 | $0.98 |
| 6+ | $0.4900 | $2.94 |
| 366+ | $0.4447 | $162.76 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit