SN74AHCT574DWIn StockTexas Instruments
Texas Instruments SN74AHCT574DW is an octal D-type flip-flop with 3-state outputs, operating at 4.5–5.5V with 75MHz max frequency and 8mA output current. Features AHCT logic family with enable-low control and 50pF load capacitance. From $0.33, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74AHCT574DW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3320(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
- Octal D-type bus interface flip-flop with 3-state outputs for high-drive bidirectional bus applications
- AHCT logic family: 5V supply, TTL-compatible inputs with CMOS-level speed and low power consumption
- High-speed operation up to 75MHz with enable-low control for flexible bus management
- 20-pin SOIC (SOIC-20) package with 8mA output drive current and 50pF load capacitance support
- Fully compliant with JESD-609 e4 (RoHS) and JESD-30 standards for industrial reliability
Applications
The SN74AHCT574DW is widely used in data bus buffering and storage applications in microprocessor systems, FPGAs, and embedded controllers. Its 3-state outputs make it ideal for shared bus architectures in memory interfaces, I/O expansion, and backplane designs. The AHCT logic family ensures compatibility with both TTL and CMOS systems, making it a versatile choice for industrial, computing, and communications equipment.
Specifications
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | AHCT/VHCT/VT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max Frequency@Nom-Sup | 75000000Hz |
| 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 | 13ns |
| Propagation Delay (tpd) | 13ns |
| 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 | 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) | NOT SPECIFIED |
| Trigger Type | POSITIVE EDGE |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SN74AHCT574DW and what are its key electrical specifications?
The SN74AHCT574DW is an octal D-type flip-flop with 3-state outputs from Texas Instruments, belonging to the AHCT logic family. It operates from a 4.5V to 5.5V supply, supports clock frequencies up to 75MHz, provides 8mA output sink current, and features TTL-compatible inputs with a 50pF load capacitance rating. It comes in a 20-pin SOIC package.
What are the typical applications for the SN74AHCT574DW?
The SN74AHCT574DW is commonly used in bus buffering, data latching, and interface bridging in microprocessor and FPGA systems. Its 3-state output and enable-low control make it ideal for shared data bus designs, memory address latching, I/O expansion boards, and backplane communication systems in computing and industrial applications.
Is the SN74AHCT574DW RoHS compliant and what package does it come in?
Yes, the SN74AHCT574DW carries JESD-609 e4 certification, confirming full RoHS compliance with lead-free construction. It is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package, which is widely supported by standard PCB assembly processes and suitable for surface-mount manufacturing.
What is the difference between the AHCT and HCT logic families for this flip-flop?
The AHCT (Advanced High-speed CMOS with TTL-compatible inputs) family offers improved speed and slightly higher drive capability compared to the standard HCT family. The SN74AHCT574DW achieves up to 75MHz operation with 8mA output current, while consuming lower static power than bipolar TTL devices. Both families accept TTL-level inputs, making them drop-in compatible with TTL systems.
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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+ | $0.8300 | $0.83 |
| 51+ | $0.7176 | $36.60 |
| 100+ | $0.6651 | $66.51 |
| 121+ | $0.4150 | $50.21 |
| 483+ | $0.3320 | $160.36 |
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