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74LVTH244ABQ Scheda tecnica(PDF) 6 Page - NXP Semiconductors |
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74LVTH244ABQ Scheda tecnica(HTML) 6 Page - NXP Semiconductors |
6 / 15 page 74LVT_LVTH244A_4 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 04 — 3 September 2008 6 of 15 NXP Semiconductors 74LVT244A; 74LVTH244A 3.3 V octal buffer/line driver; 3-state [1] All typical values are at Tamb = 25 °C. [2] Unused pins at VCC or GND. [3] This is the bus hold overdrive current required to force the input to the opposite logic state. [4] This parameter is valid for any VCC between 0 V and 1.2 V with a transition time of up to 10 ms. From VCC = 1.2 V to VCC = 3.3 V ± 0.3 V a transition time of 100 µs is permitted. This parameter is valid for T amb = 25 °C only. [5] ICC is measured with outputs pulled to VCC or GND. [6] This is the increase in supply current for each input at the specified voltage level other than VCC or GND. 10. Dynamic characteristics IOZ OFF-state output current VCC = 3.6 V; VI =VIH or VIL VO = 3.0 V - 1 5 µA VO = 0.5 V −5 −1 −µA ICC supply current VCC = 3.6 V; VI = GND or VCC; IO =0A output HIGH - 0.13 0.19 mA output LOW - 3 12 mA outputs disabled [5] - 0.13 0.19 mA ∆ICC additional supply current per input pin; VCC = 3.0 V to 3.6 V; one input at VCC − 0.6 V and other inputs at VCC or GND [6] - 0.1 0.2 mA CI input capacitance VI = 0 V or 3.0 V - 4 - pF CO output capacitance outputs disabled; VO = 0 V or 3.0 V - 8 - pF Table 6. Static characteristics …continued At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Typ Max Unit Table 7. Dynamic characteristics Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7. Symbol Parameter Conditions Min Typ Max Unit Tamb = −40 °C to +85 °C [1] tPLH LOW to HIGH propagation delay nAn to nYn; see Figure 5 VCC = 2.7 V - - 5.0 ns VCC = 3.0 V to 3.6 V 1 2.5 4.1 ns tPHL HIGH to LOW propagation delay nAn to nYn; see Figure 5 VCC = 2.7 V - - 5.1 ns VCC = 3.0 V to 3.6 V 1 2.6 4.1 ns tPZH OFF-state to HIGH propagation delay see Figure 6 VCC = 2.7 V - - 6.3 ns VCC = 3.0 V to 3.6 V 1 3.2 5.2 ns tPZL OFF-state to LOW propagation delay see Figure 6 VCC = 2.7 V - - 6.7 ns VCC = 3.0 V to 3.6 V 1.1 3.1 5.2 ns tPHZ HIGH to OFF-state propagation delay see Figure 6 VCC = 2.7 V - - 6.3 ns VCC = 3.0 V to 3.6 V 1.9 3.3 5.6 ns |
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