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HD74LS123 데이터시트(PDF) 6 Page - Renesas Technology Corp |
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HD74LS123 데이터시트(HTML) 6 Page - Renesas Technology Corp |
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6 / 9 page ![]() HD74LS123 Rev.2.00, Feb.18.2005, page 6 of 8 Testing Method Test Circuit Cext Load circuit 1 Output Q VCC RL CL Same as Load Circuit 1. Output Q A1 Input P.G. Zout = 50 Ω B1 Input P.G. Zout = 50 Ω CLR Input P.G. Zout = 50 Ω VCC Q Q Rext /Cext Rext /Cext Cext CLR Notes: 1. CL includes probe and jig capacitance. 2. All diodes are 1S2074(H). Waveform 1.3V tw (in) ≥ 40ns tw (in) ≥ 40ns tw (in) ≥ 40ns tw (in) ≥ 40ns tPLH tPLH tPHL tPHL tPLH tw (out) tw (out) tPHL tw (CLR) ≥ 40ns 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V 1.3V A 3V 0V B 3V 0V Clear 3V 0V Q VOH VOL Q VOH VOL Note: Input pulse; tTLH ≤ 15 ns, t THL ≤ 6 ns. |
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