SN74ALS280DRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74ALS280DRE4 is a 9-bit odd/even parity generator and checker from Texas Instruments in the Advanced Low-power Schottky (ALS) logic family with 3-state complementary outputs. It operates with a 50 pF load capacitance and provides simultaneous odd and even parity outputs for reliable data integrity checking in a 14-pin SOIC package. Available in stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS280DRE4 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
- 9-bit parity generation and checking in a single IC simplifies data integrity verification in bus-oriented digital systems
- Simultaneous complementary odd and even parity outputs eliminate the need for external inverters in mixed-parity applications
- Advanced Low-power Schottky (ALS) family delivers fast propagation delays with reduced power consumption versus standard TTL
- 3-state outputs enable direct connection to shared buses without signal contention when the device is disabled
Applications
The SN74ALS280DRE4 is used in memory subsystems, data communication interfaces, and microprocessor bus designs where byte-wide or word-wide parity checking is required for error detection. Its simultaneous odd and even parity outputs allow a single device to serve both odd-parity DRAM banks and even-parity transmission schemes without additional logic. The ALS family speed and low power consumption also suit legacy industrial equipment and instrumentation requiring parity-protected data paths.
Specifications
| YTEOL | 0 |
| Additional Feature | ODD/EVEN PARITY GENERATOR |
| Family | ALS |
| JESD-30 Code | R-PDSO-G14 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | PARITY GENERATOR/CHECKER |
| Number of Bits | 9 |
| Number of Functions | 1 |
| Output Characteristics | 3-STATE |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 16mA |
| Propagation Delay (tpd) | 20ns |
| 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 | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74ALS280DRE4:
Parity Generator/Checker, ALS Series, 9-Bit, Complementary Output, TTL, PDSO14
Parity Generator/Checker, ALS Series, 9-Bit, Complementary Output, TTL, PDSO14
Frequently Asked Questions
What parity functions does the SN74ALS280DRE4 support?
The SN74ALS280DRE4 generates and checks both odd and even parity simultaneously across 9 input bits, providing complementary parity outputs so it can serve different parity conventions without external inverters.
What logic family is the SN74ALS280DRE4 part of?
The SN74ALS280DRE4 belongs to the Advanced Low-power Schottky (ALS) TTL family, which offers faster switching speeds and lower power consumption compared to standard LS-TTL while maintaining full TTL input/output compatibility.
What package does the SN74ALS280DRE4 use?
The SN74ALS280DRE4 is housed in a 14-pin SOIC package (JESD-30 code R-PDSO-G14), a standard surface-mount outline that simplifies automated PCB assembly and enables high-density board layouts.
Can the SN74ALS280DRE4 be used on shared data buses?
Yes, the SN74ALS280DRE4 features 3-state outputs, allowing the device to be tri-stated and effectively disconnected from the bus when not selected, preventing signal contention in multi-device bus architectures.
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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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