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MB2841 Datasheet(PDF) 1 Page - NXP Semiconductors |
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MB2841 Datasheet(HTML) 1 Page - NXP Semiconductors |
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1 / 10 page  Philips Semiconductors Advanced BiCMOS Products Product specification MB2841 Dual 10-bit bus interface latch (3-State) 1 August 24, 1993 853-1668 10619 FEATURES • High speed parallel latches • Live insertion/extraction permitted • Extra data width for wide address/data paths or buses carrying parity • Power-up 3-State • Power-up reset • Ideal where high speed, light loading, or increased fan-in are required with MOS microprocessors • Output capability: +64mA/–32mA • Latch-up protection exceeds 500mA per Jedec JC40.2 Std 17 • ESD protection exceeds 2000V per MIL STD 883 Method 3015 and 200V per Machine Model DESCRIPTION The MB2841 Bus interface register is designed to provide extra data width for wider data/address paths of buses carrying parity. The MB2841 consists of two sets of ten D-type latches with 3-State outputs. The flip-flops appear transparent to the data when Latch Enable (nLE) is High. This allows asynchronous operation, as the output transition follows the data in transition. On the nLE High-to-Low transition, the data that meets the setup and hold time is latched. Data appears on the bus when the Output Enable (nOE) is Low. When nOE is High the output is in the High-impedance state. QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS Tamb = 25°C; GND = 0V TYPICAL UNIT tPLH tPHL Propagation delay nDx to nQx CL = 50pF; VCC = 5V 3.5 ns CIN Input capacitance VI = 0V or VCC 4 pF COUT Output capacitance VO = 0V or VCC; 3-State 7 pF ICCZ Total supply current Outputs disabled; VCC = 5.5V 120 µA ORDERING INFORMATION PACKAGES TEMPERATURE RANGE ORDER CODE DRAWING NUMBER 52-pin Plastic Quad Flat Pack (PQFP) -40 °C to +85°C MB2841BB 1418B PIN CONFIGURATION LOGIC SYMBOL 5 19 22 20 23 17 16 25 26 24 15 14 21 18 1Q8 2Q1 1Q9 2Q2 GND 1Q6 2Q4 2Q5 2Q3 1Q5 2Q0 1Q7 1Q4 1 2 3 4 6 7 8 9 10 11 12 13 47 44 46 43 49 50 41 40 42 51 52 45 48 1D9 2D2 2D0 GND 1D7 1D6 2D4 2D5 2D3 1D5 2D1 1D8 1D4 39 38 37 36 35 34 33 32 31 30 29 28 27 MB2841 52-pin PQFP 45 44 42 41 39 38 37 36 1D0 1D1 1D2 1D3 1D4 1D5 1D6 1D7 1Q0 1Q1 1Q2 1Q3 1Q4 1Q5 1Q6 1Q7 48 49 50 51 1 2 3 5 46 47 1LE 1OE 35 34 1D8 1D9 1Q8 1Q9 6 7 33 32 31 29 28 27 25 24 2D0 2D1 2D2 2D3 2D4 2D5 2D6 2D7 2Q0 2Q1 2Q2 2Q3 2Q4 2Q5 2Q6 2Q7 8 9 10 11 12 13 15 16 21 20 2LE 2OE 23 22 2D8 2D9 2Q8 2Q9 18 19 |
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