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54ABT646D 数据表(PDF) 6 Page - National Semiconductor (TI) |
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54ABT646D 数据表(HTML) 6 Page - National Semiconductor (TI) |
6 / 14 page DC Electrical Characteristics (Continued) Note 4: For 8-bit toggling, ICCD < 1.4 mA/MHz. Note 5: Guaranteed but not tested. AC Electrical Characteristics 54ABT T A = −55˚C to +125˚C Fig. Symbol Parameter V CC = 4.5V– 5.5V Units No. C L = 50 pF Min Max f max Max Clock Frequency 125 MHz t PLH Propagation Delay 2.2 8.8 ns Figure 8 t PHL Clock to Bus 1.7 8.8 t PLH Propagation Delay 1.5 7.9 ns Figure 8 t PHL Bus to Bus 1.5 7.9 t PLH Propagation Delay 1.5 8.1 ns Figure 8 t PHL SBA or SAB to A n to Bn 1.5 8.9 t PZH Enable Time 1.0 7.3 ns Figure 10 t PZL OE to A n or Bn 1.9 8.8 t PHZ Disable Time 1.5 9.3 ns Figure 10 t PLZ OE to A n or Bn 1.5 9.3 t PZH Enable Time 1.0 7.7 ns Figure 10 t PZL DIR to A n or Bn 2.2 9.5 t PHZ Disable Time 1.5 8.7 ns Figure 10 t PLZ DIR to A n or Bn 1.5 9.2 AC Operating Requirements 54ABT T A = −55˚C to +125˚C Fig. Symbol Parameter V CC = 4.5V– 5.5V Units No. C L = 50 pF Min Max t S(H) Setup Time, HIGH 3.5 ns Figure 11 t S(L) or LOW Bus to Clock t H(H) Hold Time, HIGH 1.0 ns Figure 11 t H(L) or LOW Bus to Clock t W(H) Pulse Width, 4.0 ns Figure 9 t W(L) HIGH or LOW Capacitance Symbol Parameter Typ Units Conditions T A = 25˚C C IN Input Capacitance 5 pF V CC = 0V (non I/O pins) C I/O (Note 6) Output Capacitance 11 pF V CC = 5.0V (An,Bn) Note 6: CI/O is measured at frequency, f = 1 MHz, per MIL-STD-883B, Method 3012. www.national.com 6 |
类似零件编号 - 54ABT646D |
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类似说明 - 54ABT646D |
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