74280 IC 9-bit odd/even parity generator/checker
74LS280 Universal 9-Bit Parity Generator/Checker features odd/even outputs , 33ns delay , and low power. Cascadable for n-bit systems.
18.00 EGP
Buy Now74280 IC 9-bit odd/even parity generator/checker
The 74LS280 is a universal 9-bit parity generator and checker designed for high-performance digital systems. It features both odd and even outputs, allowing it to facilitate either parity type with ease. While it is designed without a traditional expander input, it can be easily cascaded to handle longer word lengths. This model is an ideal upgrade for systems using older MSI parity circuits, such as the LS180, offering improved performance and lower drive requirements through its buffered inputs.
✅Features
- 9-Bit Parity Support: Generates either odd or even parity for nine data lines.
- Universal Application: Features dedicated Σ EVEN and Σ ODD outputs.
- High Speed: Typical data-to-output propagation delay of 33 ns.
- Low Loading: Inputs are buffered to lower drive requirements to just one LS unit load.
- Low Power: Typical power dissipation is only 80 mW.
- Cascadable: Designed for easy word-length expansion for n-bit systems.
- System Upgrade: Direct performance-enhancing substitute for older MSI circuits like the LS180.
📜📚Specifications
Guaranteed Operating Ranges
| Symbol | Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Vcc | Supply Voltage | 4.75 | 5.0 | 5.25 | V |
| Ta | Operating Ambient Temperature | 0 | 25 | 70 | °C |
| Ioh | Output Current — High | — | — | -0.4 | mA |
| Iol | Output Current — Low | — | — | 8.0 | mA |
DC Characteristics
| Symbol | Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Vih | Input HIGH Voltage | 2.0 | — | — | V | Guaranteed for all inputs |
| Vil | Input LOW Voltage | — | — | 0.8 | V | Guaranteed for all inputs |
| Vik | Input Clamp Diode Voltage | — | -0.65 | -1.5 | V | Vcc=MIN, Iin=-18mA |
| Voh | Output HIGH Voltage | 2.7 | 3.5 | — | V | Vcc=MIN, Ioh=MAX |
| Vol | Output LOW Voltage | — | 0.35 | 0.5 | V | Vcc=MIN, Iol=8.0mA |
| Iih | Input HIGH Current | — | — | 20 | µA | Vcc=MAX, Vin=2.7V |
| Iil | Input LOW Current | — | — | -0.4 | mA | Vcc=MAX, Vin=0.4V |
| Icc | Power Supply Current | — | — | 27 | mA | Vcc=MAX |
AC Switching Characteristics
Conditions: Ta = 25°C, Vcc = 5.0V, Cl = 15pF
| Symbol | Parameter | Typ | Max | Unit |
|---|---|---|---|---|
| tplh / tphl | Propagation Delay (Data to Σ EVEN) | 33 / 29 | 50 / 45 | ns |
| tplh / tphl | Propagation Delay (Data to Σ ODD) | 23 / 31 | 35 / 50 | ns |
💻Applications
- Error Detection
- Parity Generation
- System Upgrades
- Word Length Expansion
🎁Package Content
- 1 x 74280 IC 9-bit odd/even parity generator/checker
📖DataSheet
Only logged in customers who have purchased this product may leave a review.
Reviews
There are no reviews yet.