74240 Octal 3-STATE Buffer/Line Driver/Line Receiver IC PDIP-20
74240 is a high-performance octal 3-STATE buffer/line driver/receiver for TTL bus applications, 5V supply, 24mA sink, −15mA source outputs.
20.00 EGP
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The 74240 Octal 3-STATE Buffer/Line Driver/Line Receiver IC PDIP-20 is an octal buffer/line driver/line receiver device designed for bus-oriented systems, memory-address driving and clock distribution, providing 3-STATE outputs, PNP inputs for reduced DC loading, input hysteresis for improved noise rejection, and a standard PDIP-20 through-hole package for easy prototyping and retrofit applications.
Features:
- Eight buffered inverting/noninverting channels with 3-STATE outputs suitable for bus interfacing and multiplexed systems.
- PNP input structure reduces DC loading on data and bus lines for improved signal integrity.
- Input hysteresis (typically 0.2–0.4V) for enhanced noise margin at data inputs.
- High sink capability with typical IOL= 24mA and moderate source capability with typical IOH= −15mA.
- Fast switching for TTL designs with typical propagation delays in the low-tens of nanoseconds range.
- Low off-state leakage (IOZ typically ±20µA) to minimize bus contention when outputs are disabled.
- Enables driving terminated lines down to 133Ω and supports high fanout configurations.
Pinout Diagram:
Specifications:
| Parameter | Value |
|---|---|
| Category: | Integrated Circuits (ICs)/Logic/Buffers, Drivers, Receivers, Transceivers |
| Manufacturer: | XBLW |
| Package: | DIP-20 |
| Output Type: | Tri-State |
| Operating Temperature: | -20℃~+85℃ |
| Series: | 74LS Series |
| Number of Bits per Element: | 8 |
| Quiescent Current (Iq): | 8uA |
| Current – Output High (IOH): | 7.8mA |
| Channel Type: | Unidirectional |
| Voltage – Supply: | 2V~6V |
| Number of Channels: | 1 |
| Propagation Delay: | 9ns@5V,15pF |
| Current – Output Low (IOL): | 7.8mA |
For full electrical specifications, please read the datasheet down below.
Applications:
- Bus drivers and transceivers for microprocessor address and data buses.
- Memory address buffering and clock distribution in digital systems.
- Line driving for terminated transmission lines and high-fanout logic networks.
- Bus isolation and 3-STATE multiplexing in instrumentation and control systems.
- General TTL-level buffering and interfacing in legacy and embedded designs.
Package Contents:
- 1x 74240 Octal 3-STATE Buffer/Line Driver/Line Receiver IC PDIP-20
Documents:
| Datasheet | 74240 |
| CAD Files | Download |