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74F225 Datasheet(PDF) 10 Page - NXP Semiconductors |
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74F225 Datasheet(HTML) 10 Page - NXP Semiconductors |
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10 / 14 page  Philips Semiconductors Product specification 74F225 16 × 5 asynchronous FIFO (3-State) June 15, 1992 10 APPLICATION OR UNCPIN Q0 Q1 Q2 Q3 Q4 CPA CPB UNCPOUT IR D0 D1 D2 D3 D4 NC CPA CPB UNCPOUT IR D0 D1 D2 D3 D4 MR OE OR UNCPIN Q0 Q1 Q2 Q3 Q4 MR OE MR OE MR OE NC NC NC MR OE MR OE Output enable NC NC Output ready Unload clock 5–bit data output 5–bit data output Load clock 5–bit data input Master reset Input ready 5–bit data input CPA CPB UNCPOUT IR D0 D1 D2 D3 D4 OR UNCPIN Q0 Q1 Q2 Q3 Q4 CPA CPB UNCPOUT IR D0 D1 D2 D3 D4 OR UNCPIN Q0 Q1 Q2 Q3 Q4 CPA CPB UNCPOUT IR D0 D1 D2 D3 D4 OR UNCPIN Q0 Q1 Q2 Q3 Q4 CPA CPB UNCPOUT IR D0 D1 D2 D3 D4 OR UNCPIN Q0 Q1 Q2 Q3 Q4 SF00345 Figure 1. Expanding the 74F225 FIFO (48 words of 10 bits) TEST CIRCUIT AND WAVEFORM tw 90% VM 10% 90% VM 10% 90% VM 10% 90% VM 10% NEGATIVE PULSE POSITIVE PULSE tw AMP (V) 0V 0V tTHL (tf ) INPUT PULSE REQUIREMENTS rep. rate tw tTLH tTHL 1MHz 500ns 2.5ns 2.5ns Input Pulse Definition VCC family 74F D.U.T. PULSE GENERATOR RL CL RT VIN VOUT Test Circuit for Open Collector Outputs DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators. tTHL (tf ) tTLH (tr ) tTLH (tr ) AMP (V) amplitude 3.0V 1.5V VM RL 7.0V SF00128 TEST SWITCH tPLZ closed tPZL closed All other open SWITCH POSITION |
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Similar Description - 74F225 |
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