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74FCT16500CTPVCG4 датащи(PDF) 1 Page - Texas Instruments |
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74FCT16500CTPVCG4 датащи(HTML) 1 Page - Texas Instruments |
1 / 12 page 18-Bit Registered Transceivers CY74FCT16500T CY74FCT162500T SCCS056A - August 1994 - Revised October 2001 Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered. Copyright © 2001, Texas Instruments Incorporated Features • FCT-C speed at 4.6 ns •Ioff supports partial-power- 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% CY74FCT16500T Features: • 64 mA sink current, 32 mA source current • Typical VOLP (ground bounce) <1.0V at VCC = 5V, TA = 25˚C CY74FCT162500T Features: • Balanced 24 mA output drivers • Reduced system switching noise • Typical VOLP (ground bounce) <0.6V at VCC = 5V, TA= 25˚C Functional Description These 18-bit universal bus transceivers can be operated in transparent, latched, or clock modes by combining D-type latches and D-type flip-flops. Data flow in each direction is controlled by output-enable (OEAB and OEBA), latch enable (LEAB and LEBA), and clock inputs (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-to-A is similar to that of A-to-B and is controlled by OEBA, LEBA, and CLKBA. 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 CY74FCT16500T is ideally suited for driving high-capacitance loads and low-impedance backplanes. The CY74FCT162500T has 24-mA balanced output drivers with current limiting resistors in the outputs. This reduces the need for external terminating resistors and provides for minimal undershoot and reduced ground bounce. The CY74FCT162500T is ideal for driving transmission lines. GND Logic Block Diagram 1 2 3 4 5 6 7 8 9 10 11 12 33 32 31 30 29 36 35 OEAB 34 SSOP/TSSOP Top View 13 14 15 16 17 18 19 20 21 22 23 24 45 44 43 42 41 37 38 39 40 48 47 46 LEAB A1 A2 A3 B1 B2 B3 GND GND GND VCC A6 A7 A4 A5 B4 B5 B6 B7 VCC GND A10 A11 A8 A9 B8 B9 B11 B12 GND A12 VCC A16 GND A14 VCC A15 A17 FCT16500-1 TO 17 OTHER CHANNELS LEAB OEBA LEBA CLKAB CLKBA OEAB C D C D C D C D A1 B1 25 26 27 28 49 52 51 50 A13 OEBA LEBA GND A18 CLKAB 53 56 55 54 B10 GND B14 B15 B13 B16 B17 GND B18 CLKBA FCT16500-2 |
Аналогичный номер детали - 74FCT16500CTPVCG4 |
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Аналогичное описание - 74FCT16500CTPVCG4 |
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