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IDT74FCT16500ATPVB Datasheet(PDF) 1 Page - Integrated Device Technology |
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IDT74FCT16500ATPVB Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 8 page Integrated Device Technology, Inc. The IDT logo is a registered trademark of Integrated Device Technology, Inc. FUNCTIONAL BLOCK DIAGRAM FAST CMOS 18-BIT REGISTERED TRANSCEIVER OEBA CLKBA LEBA OEAB CLKAB LEAB B1 C C A1 D D 2548 drw 01 D C D C TO 17 OTHER CHANNELS MILITARY AND COMMERCIAL TEMPERATURE RANGES AUGUST 1996 ©1996 Integrated Device Technology, Inc. 5.9 DSC-2548/7 1 IDT54/74FCT16500AT/CT/ET IDT54/74FCT162500AT/CT/ET bit registered transceivers are built using advanced dual metal CMOS technology. These high-speed, low-power 18-bit reg- istered bus transceivers combine D-type latches and D-type flip-flops to allow data flow in transparent, latched and clocked modes. Data flow in each direction is controlled by output- enable (OEAB and OEBA), latch enable (LEAB and LEBA) and clock ( CLKAB and CLKBA) inputs. For A-to-B data flow, the device operates in transparent mode when LEAB is HIGH. When LEAB is LOW, the A data is latched if CLKAB is held at a HIGH or LOW logic level. If LEAB is LOW, the A bus data is stored in the latch/flip-flop on the HIGH-to-LOW transition of CLKAB. OEAB performs the output enable function on the B port. Data flow from B port to A port is similar but uses OEBA, LEBA and CLKBA. Flow-through organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin. The FCT16500AT/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 FCT162500AT/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 FCT162500AT/CT/ET are plug-in replacements for the FCT16500AT/CT/ET and ABT16500 for on-board bus inter- face applications. DESCRIPTION: The FCT16500AT/CT/ET and FCT162500AT/CT/ET 18- FEATURES: • Common features: – 0.5 MICRON CMOS Technology – High-speed, low-power CMOS replacement for ABT functions – Typical tSK(o) (Output Skew) < 250ps – Low input and output leakage ≤1µA (max.) – ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) – Packages include 25 mil pitch SSOP, 19.6 mil pitch TSSOP, 15.7 mil pitch TVSOP and 25 mil pitch Cerpack – Extended commercial range of -40 °C to +85°C –VCC = 5V ±10% • Features for FCT16500AT/CT/ET: – High drive outputs (-32mA IOH, 64mA IOL) – Power off disable outputs permit “live insertion” – Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V, TA = 25 °C • Features for FCT162500AT/CT/ET: – Balanced Output Drivers: ±24mA (commercial), ±16mA (military) – Reduced system switching noise – Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V,TA = 25 °C |
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