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74FCT162240ETPVCT Datasheet(PDF) 1 Page - Texas Instruments |
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74FCT162240ETPVCT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 13 page 16-Bit Buffers/Line Drivers CY74FCT16240T CY74FCT162240T Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered. SCCS027B - August 1994 - Revised September 2001 Copyright © 2001, Texas Instruments Incorporated 1CY74FCT162240T Features •Ioff supports partial-power-down mode operation • Edge-rate control circuitry for significantly improved noise characteristics • Typical output skew < 250 ps • ESD > 2000V • TSSOP (19.6-mil pitch) and SSOP (25-mil pitch) packages • Industrial temperature range of –40˚C to +85˚C • VCC = 5V ± 10% CY74FCT16240T Features: • 64 mA sink current, 32 mA source current • Typical VOLP (ground bounce) <1.0V at VCC = 5V, TA = 25˚C CY74FCT162240T Features: • Balanced output drivers: 24 mA • Reduced system switching noise • Typical VOLP (ground bounce) <0.6V at VCC = 5V, TA= 25˚C Functional Description These 16-bit buffer/line drivers are used in memory driver, clock driver, or other bus interface applications, where high speed and low power are required. With flow-through pinout and small shrink packaging, board layout is simplified. The three-state controls are designed to allow 4-, 8-, or 16-bit operation. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The CY74FCT16240T is ideally suited for driving high-capacitance loads and low-impedance backplanes. The CY74FCT162240T has 24-mA balanced output drivers with current limiting resistors in the outputs. This reduces the need for external terminating resistors and provides for mini- mal undershoot and reduced ground bounce. The CY74FCT162240T is ideal for driving transmission lines. GND Logic Block Diagrams Pin Configuration 1 2 3 4 5 6 7 8 9 10 11 12 33 32 31 30 29 25 26 27 28 36 35 1OE 34 SSOP/TSSOP Top View FCT16240–1 1Y1 1Y2 1Y3 1Y4 13 14 15 16 17 18 19 20 21 22 23 24 45 44 43 42 41 37 38 39 40 48 47 46 1A1 1A2 1A3 1A4 1OE FCT16240–2 2Y1 2Y2 2Y3 2Y4 2A1 2A2 2A3 2A4 2OE 1Y1 1Y2 1Y3 1Y4 1A1 1A2 1A3 1A4 2OE GND GND VCC 2Y3 2Y4 2Y1 2Y2 2A1 2A2 2A3 2A4 VCC GND GND 3Y3 3Y4 3Y1 3Y2 3A1 3A2 3A3 3A4 GND GND VCC 4Y3 4Y4 4Y1 4Y2 4A1 4A2 4A3 4A4 VCC GND 3OE 4OE FCT16240–3 3Y1 3Y2 3Y3 3Y4 3A1 3A2 3A3 3A4 3OE FCT16240–4 4Y1 4Y2 4Y3 4Y4 4A1 4A2 4A3 4A4 4OE FCT16240–5 |
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