SN74ACT573DWIn StockTexas Instruments
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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9800 | $0.98 |
| 6+ | $0.4900 | $2.94 |
| 366+ | $0.4447 | $162.76 |
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