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74LVCH2T45GN 数据表(PDF) 10 Page - NXP Semiconductors |
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74LVCH2T45GN 数据表(HTML) 10 Page - NXP Semiconductors |
10 / 36 page 74LVC_LVCH2T45 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 4 — 20 August 2010 10 of 36 NXP Semiconductors 74LVC2T45; 74LVCH2T45 Dual supply translating transceiver; 3-state 11. Dynamic characteristics [1] tPZH and tPZL are calculated values using the formula shown in Section 14.4 “Enable times”. [1] tPZH and tPZL are calculated values using the formula shown in Section 14.4 “Enable times”. Table 9. Typical dynamic characteristics at VCC(A) = 1.2 V and Tamb = 25 °C Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 9; for waveforms see Figure 7 and Figure 8. Symbol Parameter Conditions VCC(B) Unit 1.2 V 1.5 V 1.8 V 2.5 V 3.3 V 5.0 V tPLH LOW to HIGH propagation delay A to B 10.6 8.1 7.0 5.8 5.3 5.1 ns B to A 10.6 9.5 9.0 8.5 8.3 8.2 ns tPHL HIGH to LOW propagation delay A to B 10.1 7.1 6.0 5.3 5.2 5.4 ns B to A 10.1 8.6 8.1 7.8 7.6 7.6 ns tPHZ HIGH to OFF-state propagation delay DIR to A 9.49.4 9.49.4 9.4 9.4 ns DIR to B 12.0 9.4 9.0 7.8 8.4 7.9 ns tPLZ LOW to OFF-state propagation delay DIR to A 7.17.1 7.17.1 7.1 7.1 ns DIR to B 9.57.8 7.76.9 7.6 7.0 ns tPZH OFF-state to HIGH propagation delay DIR to A [1] 20.1 17.3 16.7 15.4 15.9 15.2 ns DIR to B [1] 17.7 15.2 14.1 12.9 12.4 12.2 ns tPZL OFF-state to LOW propagation delay DIR to A [1] 22.1 18.0 17.1 15.6 16.0 15.5 ns DIR to B [1] 19.5 16.5 15.4 14.7 14.6 14.8 ns Table 10. Typical dynamic characteristics at VCC(B) = 1.2 V and Tamb = 25 °C Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 9; for waveforms see Figure 7 and Figure 8. Symbol Parameter Conditions VCC(A) Unit 1.2 V 1.5 V 1.8 V 2.5 V 3.3 V 5.0 V tPLH LOW to HIGH propagation delay A to B 10.6 9.5 9.0 8.5 8.3 8.2 ns B to A 10.6 8.1 7.0 5.8 5.3 5.1 ns tPHL HIGH to LOW propagation delay A to B 10.1 8.6 8.1 7.8 7.6 7.6 ns B to A 10.1 7.1 6.0 5.3 5.2 5.4 ns tPHZ HIGH to OFF-state propagation delay DIR to A 9.46.5 5.74.1 4.1 3.0 ns DIR to B 12.0 6.1 5.4 4.6 4.3 4.0 ns tPLZ LOW to OFF-state propagation delay DIR to A 7.14.9 4.53.2 3.4 2.5 ns DIR to B 9.57.3 6.65.9 5.7 5.6 ns tPZH OFF-state to HIGH propagation delay DIR to A [1] 20.1 15.4 13.6 11.7 11.0 10.7 ns DIR to B [1] 17.7 14.4 13.5 11.7 11.7 10.7 ns tPZL OFF-state to LOW propagation delay DIR to A [1] 22.1 13.2 11.4 9.9 9.5 9.4 ns DIR to B [1] 19.5 15.1 13.8 11.9 11.7 10.6 ns |
类似零件编号 - 74LVCH2T45GN |
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类似说明 - 74LVCH2T45GN |
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