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74ABT245 Datasheet(PDF) 4 Page - Fairchild Semiconductor |
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74ABT245 Datasheet(HTML) 4 Page - Fairchild Semiconductor |
4 / 11 page www.fairchildsemi.com 4 DC Electrical Characteristics (SOIC package) Note 4: Max number of outputs defined as (n). n-1 data inputs are driven 0V to 3V. One output at LOW. Guaranteed, but not tested. Note 5: Max number of data inputs (n) switching. n-1 inputs switching 0V to 3V. Input-under-test switching: 3V to threshold (VILD), 0V to threshold (VIHD). Guaranteed, but not tested. Note 6: Max number of outputs defined as (n). n 1 data inputs are driven 0V to 3V. One output HIGH. Guaranteed, but not tested. AC Electrical Characteristics (SOIC and SSOP package) Extended AC Electrical Characteristics (SOIC package) Note 7: This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase (i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.). Note 8: This specification is guaranteed but not tested. The limits represent propagation delay with 250 pF load capacitors in place of the 50 pF load capac- itors in the standard AC load. This specification pertains to single output switching only. Note 9: This specification is guaranteed but not tested. The limits represent propagation delays for all paths described switching in phase (i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.) with 250 pF load capacitors in place of the 50 pF load capacitors in the standard AC load. Note 10: The 3-STATE delays are dominated by the RC network (500 :, 250 pF) on the output and have been excluded from the datasheet. Symbol Parameter Min Typ Max Units VCC Conditions CL 50 pF, RL 500: VOLP Quiet Output Maximum Dynamic VOL 0.7 1.0 V 5.0 TA 25qC (Note 4) VOLV Quiet Output Minimum Dynamic VOL 1.3 1.0 V 5.0 TA 25qC (Note 4) VOHV Minimum HIGH Level Dynamic Output Voltage 2.7 3.1 V 5.0 TA 25qC (Note 6) VIHD Minimum HIGH Level Dynamic Input Voltage 2.0 1.7 V 5.0 TA 25qC (Note 5) VILD Maximum LOW Level Dynamic Input Voltage 0.9 0.6 V 5.0 TA 25qC (Note 5) TA 25qCTA 55qC to 125qCTA 40qC to 85qC Symbol Parameter VCC 5V VCC 4.5V–5.5V VCC 4.5V–5.5V Units CL 50 pF CL 50 pF CL 50 pF Min Typ Max Min Max Min Max tPLH Propagation Delay 1.0 2.1 3.6 1.0 4.8 1.0 3.6 ns tPHL Data to Outputs 1.0 2.4 3.6 1.0 4.8 1.0 3.6 tPZH Output Enable 1.5 3.2 6.0 1.0 6.7 1.5 6.0 ns tPZL Time 1.5 3.7 6.0 2.0 7.5 1.5 6.0 tPHZ Output Disable 1.0 3.6 6.1 1.7 7.4 1.0 6.1 ns tPLZ Time 1.0 3.3 5.6 1.7 6.5 1.0 5.6 Symbol Parameter 40qC to 85qC TA 40qC to 85qC TA 40qC to 85qC Units VCC 4.5V–5.5V VCC 4.5V–5.5V VCC 4.5V–5.5V CL 50 pF CL 250 pF CL 250 pF 8 Outputs Switching 1 Output Switching 8 Outputs Switching (Note 7) (Note 8) (Note 9) Min Typ Max Min Max Min Max fTOGGLE Max Toggle Frequency 100 MHz tPLH Propagation Delay 1.5 5.0 1.5 6.0 2.5 8.5 ns tPHL Data to Outputs 1.5 5.0 1.5 6.0 2.5 8.5 tPZH Output Enable Time 1.5 6.5 2.5 7.5 2.5 9.5 ns tPZL 1.5 6.5 2.5 7.5 2.5 11.0 tPHZ Output Disable Time 1.0 6.5 (Note 10) (Note 10) ns tPLZ 1.0 5.6 |
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