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74AHCT1G66 데이터시트(PDF) 6 Page - NXP Semiconductors |
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74AHCT1G66 데이터시트(HTML) 6 Page - NXP Semiconductors |
6 / 17 page 74AHC_AHCT1G66_4 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 04 — 18 December 2008 6 of 17 NXP Semiconductors 74AHC1G66; 74AHCT1G66 Single-pole single-throw analog switch 10.2 ON resistance [1] At supply voltages approaching 2 V, the analog switch ON resistance becomes extremely non-linear. Therefore it is recommended that these devices be used to transmit digital signals only, when using this supply voltage. 10.3 ON resistance test circuit and graphs Table 8. ON resistance At recommended operating conditions; voltages are referenced to GND (ground 0 V); for graph see Figure 7 [1] . Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit Typ max Max Max 74AHC1G66 and 74AHCT1G66 RON(peak) ON resistance (peak) VI =VCC to GND; see Figure 6 ISW = 1.0 mA; VCC = 2.0 V 148[1] -- - Ω ISW = 10 mA; VCC = 3.0 V to 3.6 V 28 50 70 110 Ω ISW = 10 mA; VCC = 4.5 V to 5.5 V 15 30 40 60 Ω RON(rail) ON resistance (rail) VI = GND; see Figure 6 ISW = 1.0 mA; VCC = 2.0 V 30 - - - Ω ISW = 10 mA; VCC = 3.0 V to 3.6 V 20 50 65 90 Ω ISW = 10 mA; VCC = 4.5 V to 5.5 V 15 22 26 40 Ω VI =VCC; see Figure 6 ISW = 1.0 mA; VCC = 2.0 V 28 - - - Ω ISW = 10 mA; VCC = 3.0 V to 3.6 V 18 50 65 90 Ω ISW = 10 mA; VCC = 4.5 V to 5.5 V 13 22 26 40 Ω RON =VSW / ISW.Tamb =25 °C. Fig 6. Test circuit for measuring ON resistance Fig 7. Typical ON resistance as a function of input voltage 001aag490 VI VIH VCC GND Z Y E VSW ISW 0246 VI (V) RON ( Ω) 40 30 10 0 20 mna630 VCC = 3.0 V 4.5 V 5.5 V |
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