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SN74AHC245NSR Arkusz danych(PDF) 4 Page - Texas Instruments |
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SN74AHC245NSR Arkusz danych(HTML) 4 Page - Texas Instruments |
4 / 20 page SN54AHC245, SN74AHC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS230I – OCTOBER 1995 – REVISED JULY 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER FROM TO LOAD TA = 25°C SN54AHC245 SN74AHC245 UNIT PARAMETER (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT tPLH AorB BorA CL =15 pF 5.8** 8.4** 1** 10** 1 10 ns tPHL A or B B or A CL = 15 pF 5.8** 8.4** 1** 10** 1 10 ns tPZH OE AorB CL =15 pF 8.5** 13.2** 1** 15.5** 1 15.5 ns tPZL OE A or B CL = 15 pF 8.5** 13.2** 1** 15.5** 1 15.5 ns tPHZ OE AorB CL =15 pF 8.9** 12.5** 1** 15.5** 1 15.5 ns tPLZ OE A or B CL = 15 pF 8.9** 12.5** 1** 15.5** 1 15.5 ns tPLH AorB BorA CL =50 pF 8.3 11.9 1 13.5 1 13.5 ns tPHL A or B B or A CL = 50 pF 8.3 11.9 1 13.5 1 13.5 ns tPZH OE AorB CL =50 pF 11 16.7 1 19 1 19 ns tPZL OE A or B CL = 50 pF 11 16.7 1 19 1 19 ns tPHZ OE AorB CL =50 pF 11.5 15.8 1 18 1 18 ns tPLZ OE A or B CL = 50 pF 11.5 15.8 1 18 1 18 ns tsk(o) CL = 50 pF 1.5*** 1.5 ns ** On products compliant to MIL-PRF-38535, this parameter is not production tested. *** On products compliant to MIL-PRF-38535, this parameter does not apply. switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER FROM TO LOAD TA = 25°C SN54AHC245 SN74AHC245 UNIT PARAMETER (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT tPLH AorB BorA CL =15 pF 4* 5.5* 1* 6.5* 1 6.5 ns tPHL A or B B or A CL = 15 pF 4* 5.5* 1* 6.5* 1 6.5 ns tPZH OE AorB CL =15 pF 5.8* 8.5* 1* 10* 1 10 ns tPZL OE A or B CL = 15 pF 5.8* 8.5* 1* 10* 1 10 ns tPHZ OE AorB CL =15 pF 5.6* 7.8* 1* 9.2* 1 9.2 ns tPLZ OE A or B CL = 15 pF 5.6* 7.8* 1* 9.2* 1 9.2 ns tPLH AorB BorA CL =50 pF 5.5 7.5 1 8.5 1 8.5 ns tPHL A or B B or A CL = 50 pF 5.5 7.5 1 8.5 1 8.5 ns tPZH OE AorB CL =50 pF 7.3 10.6 1 12 1 12 ns tPZL OE A or B CL = 50 pF 7.3 10.6 1 12 1 12 ns tPHZ OE AorB CL =50 pF 7 9.7 1 11 1 11 ns tPLZ OE A or B CL = 50 pF 7 9.7 1 11 1 11 ns tsk(o) CL = 50 pF 1** 1 ns * On products compliant to MIL-PRF-38535, this parameter is not production tested. ** On products compliant to MIL-PRF-38535, this parameter does not apply. |
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