Kategorien
Dies ist eine alte Version des Dokuments!
74FCT162646: FAST CMOS 16-BIT Registered Transceiver (3-STATE)
The IDT54/74FCT16646T/AT/CT/ET and IDT54/74FCT162646T/AT/CT/ET 16-bit registered transceivers are built using advanced dual metal CMOS technology. These high-speed, low-power devices are organized as two independent 8-bit bus transceivers with 3-state D-type registers. The control circuitry is organized for multiplexed transmission of data between A bus and B bus either directly or from the internal storage registers. Each 8-bit transceiver/register features direction control (xDIR), over-riding Output Enable control (xOE) and Select lines (xSAB and xSBA) to select either real-time data or stored data. Separate clock inputs are provided for A and B port registers. Data on the A or B data bus, or both, can be stored in the internal registers by the LOW-to-HIGH transitions at the appropriate clock pins. Flowthrough organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin.
The IDT54/74FCT16646T/AT/CT/ET are ideally suited for driving high-capacitance loads and low-impedance backplanes. The output buffers are designed with power off disable capability to allow „live insertion“ of boards when used as backplane drivers.
The IDT54/74FCT162646T/AT/CT/ET have balanced output drive with current limiting resistors. This offers low ground bounce, minimal undershoot, and controlled output fall times–reducing the need for external series terminating resistors. The IDT54/74FCT162646T/AT/CT/ET are plug-in replacements for the IDT54/74FCT16646T/AT/CT/ET and 54/74ABT16646 for on-board bus interface applications.
-
Typ | Commo-Nr. | C= Bezeichnung | C= Info | Form | Editors Info | |
---|---|---|---|---|---|---|
A | 391669-01 | 74FCT16646 (SO56) | SO-56 |
Vorkommen | Anzahl | Typ | Position | Bemerkung |
---|---|---|---|---|
A4000T | 2 | A | U706, U707, | TPV |
Hergestellt in den Jahren .. bis .. in .. bekannten Revision.
Hersteller:
Hersteller-Aufdruck: +Date-Code
bisher von 'Firma/en' gesehen 'Bezeichnung' (+Bauform)