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74AHCT126D データシート(PDF) 2 Page - NXP Semiconductors |
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74AHCT126D データシート(HTML) 2 Page - NXP Semiconductors |
2 / 16 page 1999 Sep 29 2 Philips Semiconductors Product specification Quad buffer/line driver; 3-state 74AHC126; 74AHCT126 FEATURES • ESD protection: HBM EIA/JESD22-A114-A exceeds 2000 V MM EIA/JESD22-A115-A exceeds 200 V CDM EIA/JESD22-C101 exceeds 1000 V • Balanced propagation delays • All inputs have Schmitt-trigger actions • Inputs accepts voltages higher than VCC • For AHC only: operates with CMOS input levels • For AHCT only: operates with TTL input levels • Specified from −40 to +85 and +125 °C. DESCRIPTION The 74AHC/AHCT126 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard No. 7A. The 74AHC/AHCT126 are four non-inverting buffer/line drivers with 3-state outputs. The 3-state outputs (nY) are controlled by the output enable input (nOE) A LOW at nOE causes the outputs to assume a HIGH-impedance OFF state. The ‘126’ is identical to the ‘125’ but has active HIGH enable inputs. FUNCTION TABLE See note 1. Note 1. H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF state. QUICK REFERENCE DATA GND = 0 V; Tamb =25 °C; tr =tf ≤ 3.0 ns. Notes 1. CPD is used to determine the dynamic power dissipation (PD in µW). PD =CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; ∑ (CL × VCC2 × fo) = sum of outputs; CL = output load capacitance in pF; VCC = supply voltage in Volts. 2. The condition is VI = GND to VCC. PINNING INPUTS OUTPUT nOE nA nY HL L HHH LX Z SYMBOL PARAMETER CONDITIONS TYPICAL UNIT AHC AHCT tPHL/tPLH propagation delay nA to nY CL =15pF; VCC =5V 3.3 3.0 ns CI input capacitance VI =VCC or GND 3.0 3.0 pF CO output capacitance 4.0 4.0 pF CPD power dissipation capacitance CL =50pF; f = 1 MHz; notes 1 and 2 10 12 pF PIN SYMBOL DESCRIPTION 1, 4, 10 and 13 1OE to 4OE output enable inputs (active HIGH) 2, 5, 9 and 12 1A to 4A data inputs 3, 6, 8 and 11 1Y to 4Y data outputs 7 GND ground (0 V) 14 VCC DC supply voltage |
同様の部品番号 - 74AHCT126D |
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同様の説明 - 74AHCT126D |
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