SN74S280NSRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74S280NSRE4 is a 9-bit odd/even parity generator and checker IC from Texas Instruments in the fast S-family logic series. It provides complementary parity outputs with 15 pF load capacitance in a 14-pin small outline package for reliable data integrity checking.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74S280NSRE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74S280NSRE4?
- 9-bit parity generation and checking with simultaneous odd and even complementary outputs
- Fast S-family TTL logic for high-speed data transmission error detection at low propagation delays
- 14-pin small outline package with 15 pF load capacitance for compact digital communication boards
What is SN74S280NSRE4 used for?
The SN74S280NSRE4 is used in digital communication interfaces, memory bus error detection, and data transmission systems where byte-level parity checking is required. Its complementary odd/even outputs allow both odd-parity and even-parity checking on the same 9-bit word without additional logic gates. Industrial controllers, UART-based serial links, and legacy DRAM bus interfaces rely on this device to flag single-bit transmission errors in real time.
What are the specifications of SN74S280NSRE4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Additional Feature | ODD/EVEN PARITY GENERATOR |
| Family | S |
| JESD-30 Code | R-PDSO-G14 |
| Load Capacitance (CL) | 15pF |
| Logic IC Type | PARITY GENERATOR/CHECKER |
| Number of Bits | 9 |
| Number of Functions | 1 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 105mA |
| Propagation Delay (tpd) | 50ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| 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 |
Where can I find the SN74S280NSRE4 datasheet?
SN74S280NSRE4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74S280NSRE4?
Compatible alternatives and drop-in replacements for SN74S280NSRE4:
Parity Generator/Checker, LS Series, 9-Bit, Complementary Output, TTL, PDSO14
Parity Generator/Checker, S Series, 9-Bit, Complementary Output, TTL, PDSO14
Frequently Asked Questions
How does SN74S280NSRE4 generate both odd and even parity simultaneously on a 9-bit data bus?
SN74S280NSRE4 has 9 data inputs and provides complementary outputs for odd and even parity in a single 14-pin package. Both parity polarities are available at the same time, so a system can use one output to append parity during transmission and the other to verify it on receipt without adding external inverter gates.
In what memory error-detection architecture does SN74S280NSRE4 fit alongside an 8-bit data bus?
SN74S280NSRE4 covers 9 bits, matching an 8-bit data byte plus 1 parity bit. This makes it ideal for DRAM parity memory buses where the ninth pin carries the parity check bit. The device detects any single-bit error within the 9-bit word and flags it through the parity output line at speeds compatible with S-family propagation delays under 10 ns.
How does the 15 pF load capacitance specification of SN74S280NSRE4 affect fan-out in a backplane design?
The 15 pF CL rating defines the capacitive load under which the S-family switching times are guaranteed. Driving multiple loads in a backplane increases total bus capacitance; designers should ensure the sum of all input capacitances stays near 15 pF per driven line, or add 74S series buffers to maintain signal integrity when driving more than 3 to 4 TTL inputs.
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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.
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