SN74AHC573DWIn StockTexas Instruments
SN74AHC573DW is an octal transparent D-type latch with 3-state outputs, featuring 8-bit bus driving capability and AHC logic family. Supports 50 pF load capacitance and 8 mA output current. From $0.5821, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74AHC573DW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5821(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit octal transparent D-type latch with 3-state outputs for efficient bus driving
- AHC/VHC logic family with low-power CMOS technology and high-speed performance
- Active-low enable control for flexible latch operation and output enable/disable
- 20-pin SOIC (R-PDSO-G20) small outline package for space-efficient PCB designs
- Wide operating voltage range with 50 pF load capacitance support and 8 mA output drive
Applications
The SN74AHC573DW is widely used in microprocessor and microcontroller address/data bus buffering, memory interface designs, and I/O port expansion circuits. Its 3-state outputs make it ideal for shared bus architectures in embedded systems, industrial controllers, and communication equipment. The device also finds application in data registers, pipeline registers, and address latching in CPLDs, FPGAs, and DSP-based systems.
Specifications
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | AHC/VHC/H/U/V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.008A |
| 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 |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 12ns |
| Propagation Delay (tpd) | 19ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| 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 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SN74AHC573DW and what are its key electrical specifications?
The SN74AHC573DW is an 8-bit octal transparent D-type latch with 3-state outputs from Texas Instruments, part of the AHC logic family. Key specs include a maximum output low current (I(ol)) of 8 mA, 50 pF load capacitance, unidirectional data flow, and active-low enable control. It comes in a 20-pin SOIC package (R-PDSO-G20) and is RoHS compliant (JESD-609 e4).
What are the typical applications for the SN74AHC573DW?
The SN74AHC573DW is commonly used in microprocessor bus buffering, address latching for memory interfaces, I/O port expansion, and data pipeline registers. Its 3-state outputs allow multiple devices to share a common bus without contention, making it suitable for embedded systems, industrial controllers, FPGA/CPLD interface circuits, and communication equipment requiring reliable 8-bit data latching.
What package does the SN74AHC573DW come in and are there alternative package options?
The SN74AHC573DW is packaged in a 20-pin wide-body SOIC (Small Outline IC) package, designated R-PDSO-G20. Texas Instruments also offers the SN74AHC573 family in other package options such as TSSOP (SN74AHC573PW) and PDIP (SN74AHC573N), providing flexibility for different PCB layout requirements and assembly processes.
How does the enable control work on the SN74AHC573DW?
The SN74AHC573DW uses an active-low output enable (OE) and a latch enable (LE) control. When LE is high, the outputs follow the D inputs transparently. When LE goes low, the last data state is latched and held. The active-low OE pin places all 8 outputs in a high-impedance (3-state) condition when asserted low, allowing the device to be disconnected from the bus without affecting 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+ | $1.1000 | $1.10 |
| 1000+ | $0.7793 | $779.30 |
| 10000+ | $0.6948 | $6948.00 |
| 100000+ | $0.5821 | $58210.00 |
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