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74AHCT373PW Datenblatt(PDF) 5 Page - NXP Semiconductors |
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74AHCT373PW Datenblatt(HTML) 5 Page - NXP Semiconductors |
5 / 17 page 74AHC_AHCT373_3 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 03 — 20 May 2008 5 of 17 NXP Semiconductors 74AHC373; 74AHCT373 Octal D-type transparant latch; 3-state 6. Functional description [1] H = HIGH voltage level; h = HIGH voltage level one set-up time prior to the HIGH-to-LOW LE transition; L = LOW voltage level; l = LOW voltage level one set-up time prior to the HIGH-to-LOW LE transition; X = don’t care; Z = high-impedance OFF-state. 7. Limiting values [1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed. [2] For SO20 packages: above 70 °C the value of Ptot derates linearly at 8 mW/K. For TSSOP20 packages: above 60 °C the value of Ptot derates linearly at 5.5 mW/K. D7 18 data input Q7 19 3-state latch output VCC 20 supply voltage Table 2. Pin description …continued Symbol Pin Description Table 3. Function table[1] Operating mode Control Input Internal latch Output OE LE Dn Q0 to Q7 Enable and read register (transparent mode) L H L L L HHH Latch and read register L L l L L hH H Latch register and disable outputs H XXXZ XXZ Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max Unit VCC supply voltage −0.5 +7.0 V VI input voltage −0.5 +7.0 V IIK input clamping current VI < −0.5 V [1] −20 - mA IOK output clamping current VO < −0.5 V or VO >VCC + 0.5 V [1] −20 +20 mA IO output current VO = −0.5 V to (VCC + 0.5 V) −25 +25 mA ICC supply current - +75 mA IGND ground current −75 - mA Tstg storage temperature −65 +150 °C Ptot total power dissipation Tamb = −40 °C to +125 °C [2] - 500 mW |
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