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74ALVCHS16830 Datasheet(PDF) 2 Page - NXP Semiconductors |
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74ALVCHS16830 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 10 page Philips Semiconductors Product data 74ALVCHS16830 18-bit to 36-bit address driver with bus hold (3-State) 2 2002 Mar 15 853-2280 27859 FEATURES • Diodes on inputs clamp overshoot • ESD classification testing is done to JEDEC Standard JESD22. Protection exceeds 2000 V HBM per method A114. • Latch-up testing is done to JEDEC Standard JESD78, which exceeds 100 mA. • Bus hold on data inputs eliminates the need for external pullup/pulldown resistors • Packaged in thin very small-outline package (TVSOP) — 0.4 mm pitch • Optimized for use with PCK953 in SDRAM module applications • Low noise, low skew DESCRIPTION The ALVCHS16830 address driver is designed for 2.3 V to 3.6 V VCC operation. Diodes to VCC have been added on the inputs to clamp overshoot. The bus hold feature retains the inputs’ last state whenever the input bus goes to high impedance. This prevents floating inputs and eliminates the need for pull up or pull down resistors. To ensure the high-impedance state during power up or power down, the output-enable (OE) input should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The 74ALVCHS16830 is characterized for operation from –40 to +85 °C. FUNCTION TABLE Inputs Outputs OE1 OE2 A 1Yn 2Yn L H H H Z L H L L Z H L H Z H H L L Z L L L H H H L L L L L H H X Z Z PIN CONFIGURATION 1 2 3 4 5 6 7 8 9 10 11 12 69 70 71 72 73 74 75 76 77 78 79 80 2Y2 GND 2Y1 1Y1 VCC A1 A2 GND A3 A4 1Y3 2Y3 GND 1Y4 2Y4 VCC 1Y5 GND 2Y5 1Y6 2Y6 GND GND 13 14 15 16 17 18 63 64 65 66 67 68 A5 A6 VCC A7 A8 1Y7 VCC 2Y7 1Y8 2Y8 GND 19 62 GND A9 20 21 22 23 24 25 56 57 58 59 60 61 OE1 OE2 A10 GND A11 1Y9 2Y10 2Y9 GND 1Y11 2Y11 A12 26 55 VCC VCC 27 54 1Y12 A13 28 29 30 31 32 49 50 51 52 53 A14 GND A15 A16 GND 2Y12 1Y13 2Y13 GND 1Y2 GND 1Y10 33 48 1Y14 A17 34 47 2Y14 A18 35 46 VCC VCC 36 37 38 39 40 41 42 43 44 45 2Y18 1Y18 GND 2Y17 1Y17 1Y15 GND 1Y16 2Y16 2Y15 SW00723 TOP VIEW ORDERING INFORMATION PACKAGES TEMPERATURE RANGE ORDER CODE DWG NUMBER 80-pin plastic thin very small outline (TVSOP) –40 to +85 °C 74ALVCHS16830DGB SOT647-1 |
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