|
|
Transistor-Transistor Logic
(TTL) A common semiconductor technology for building discrete
digital logic integrated circuits. It originated from Texas
Instruments in 1965.
There have been several series of TTL logic:
7400: 10 ns propagation time, 10 mW/gate power consumption,
obsolete;
74L00: Low power: higher resistances, less dissipation
(1 mW), longer propagation time (30 ns);
74H00: High power: lower resistances, more dissipation: less
sensitivity for noise;
74S00: Schottky-clamped: faster switching (3 ns, 19 mW) by
using Schottky diodes to prevent the transistors from
saturation;
74LS00: Low power, Schottky-clamped (10 ns, 2 mW);
74AS00: Advanced Schottky: faster switching, less
dissipation, (1.5 ns, 10 mW);
74ALS00: Advanced Low power Schottky (4 ns, 1.3 mW).
For each 74xxx family there is a corresponding 54xxx family.
The 74 series are specified for operation at 0 - 70 C whereas
the 54 (military) series can operate at -55 - 125 C
See also CMOS, ECL.
Try this search on OneLook / Google
Nearby terms:
transient « Transient Program Area « transistor « Transistor-Transistor Logic » TRANSIT » transition ad » transitive
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
Socket 370 Heat Sink &Fan up to 1.3GHzSocket 370 Heat Sink &Fan up to 1.3GHz ** Socket 370 Heat Sink and Fan up to 1.3 GHz **Keep your Socket 370 processor running cool every time! This heat sink and fan supports Socket 370 processors and is designed to help dissipate damaging heat away from the processor! General Features:- Aluminum heat sink- CPU Cooler for Socket 370 processors up to 1.3 GHz- 2.5-inch x 2.5-inch Fan- 3-pin fan connector(approximately 7-inches cord length from fan to 3-pin connector)- Metal mounting clip- Easy Installation and Release- Reduces CPU temperature- Extends CPU's lifeNotes:- Heat Sink and Fan only Compatibility/Requirements/Disclosures:** Requirements *** Socket 370 processors* Available 3-pin power connector for fan More ...
Super Tutor GeometrySuper Tutor Geometry These interactive, multimedia lessons reinforce your understanding of the core subjects covered in a one-year high school geometry course. Difficult topics are presented in an engaging, friendly style. Perfect for after school or home school learning! Windows 95/98/2000/ME/XP More ...
Symantec PC Anywhere 11 OEMSymantec PC Anywhere 11 OEM ** Symantec PC Anywhere 11 OEM **Symantec pcAnywhere, the world's leading remote control solution, helps quickly resolve helpdesk and server support problems. New Remote Management tools include remote versions of common tools such as Regedit, Task Manager, Command Prompt, and the NT Event Log to quickly solve problems on the host machine. The combination of remote control, comprehensive remote management, and advanced file transfer capabilities enhances helpdesk efficiency, reduces call times, and frees IT personnel to focus on strategic business initiatives.With comprehensive security features, including support for 13 authentication types, PKI and Symmetric encryption, mandatory passwords, host and remote serialization, integrity checking, and enhanced logging tools, Symantec pcAnywhere can be safely deployed in any environment.The Symantec Packager allows administrators to create customized installation sets by providing the ability to choose which components to install, define policies, add host and remote objects, and set security options. Once finished, administrators can deploy this installation (and other applications as well) to their users simultaneously across the network.Thin host and Quick Deploy & Connect features enable administrators to connect to a remote machine, even if pcAnywhere is not installed. The new Command Queue provides the ability to queue up multiple files and DOS commands and process them in sequence. Files can be reprioritized, paused, and deleted from the queue as needed. File transfers occur in the background so administrators can work uninterrupted and continue to select files while other files are being sent. Administrators can even send files to multiple computers in sequence. An easy-to-use graphical user interface provides consistent navigation between remote control, remote management, and file transfer applications.Key Features: - Industry-leading remote control, combined with remote management and file transfer capabilities, helps quickly resolve helpdesk and server support issues - Use new Remote Management tools to quickly solve specific problems without the need for a full remote control session - pcAnywhere Command Queue can be used to send files, folders, and DOS commands to one or more computers Symantec Packager provides the ability to create - customized installation sets by choosing components to install, default settings, default host and remote objects, and security options New! - Symantec Packager can deploy multiple applications to Windows? NT/2000 and XP machines for simultaneous deployment and installation New! - Quick Deploy & Connect feature allows administrators to quickly start a remote control session with a machine that does not have pcAnywhere installed New! - Support for SecurID two-factor authentication New! - Enhanced file transfer enables administrators to queue additional files while sending files in the background New! - Policy management allows administrators to control which pcAnywhere components are accessible and modifiable by the end user New! - Remote Access Perimeter Scanner detects unprotected remote access products on network and phone lines - Multiple levels of security protect host against unauthorized access - Fast and secure problem resolution for remote workstations and serversNotes:- Picture is for representational purposes only- OEM CD ONLY More ...
Intel PII 266MHz 66MHz 512KB Slot 1 CPUIntel PII 266MHz 66MHz 512KB Slot 1 CPU ** Intel Pentium II 266MHz 512KB 66MHz **- Standard Intel Pentium II Processor- 266 MHz- Slot 1, SECC Package- 66 MHz Bus Speed- 512KB L2 Cache- CPU Only Compatibility/Requirements/Disclosures:* Motherboard That Supports PII 266MHz CPUs* SECC Heatsink & Fan More ...
Moraff's Ringjongg Vol 2Moraff's Ringjongg Vol 2 Moraff's RingJongg is the most challenging of all of the Mahjongg type games. RingJongg games go very, very quickly, but finding a way to win is another story! Windows 95/98/ME/2000/XP More ...
Samsung 48x IDE CD-ROM Drive (Black)Samsung 48x IDE CD-ROM Drive (Black) ** 48X Samsung IDE CD-ROM Drive **General Features:- Black Faceplate- Data Transfer Rate: 7,200KB/sec (48X)- Interface: IDE- Average Access Time: 80ms (1/3 stroke)- Buffer Memory: 128KB- Compatible with: CD-R/CD-RW, CD-DA, CD-ROM/XA, Video CD, CD-I, Multisession Photo- Loading Type: Motorized Tray Type- Volume Control Wheel- Headphone jack- Emergency Eject Hole- Model: SC-148-> Notes:- Bulk (Drive Only)- Samsung model #: SC-148- IBM part #: 33P3210 Compatibility/Requirements/Disclosures:** Requirements *** Available 5.25 Drive Bay * IDE Controller * Available Power Connector* IDE Cable -- NOT Included ** Disclosures *** This Samsung drive was OEM for IBM More ...
|
