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10 / 21 page 74AHC_AHCT595_4 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 04 — 11 August 2009 10 of 21 NXP Semiconductors 74AHC595; 74AHCT595 8-bit serial-in/serial-out or parallel-out shift register with output latches fmax maximum frequency SHCP or STCP; see Figure 8 and 9 VCC = 3.0 V to 3.6 V 80 125 - 60 - 40 - MHz VCC = 4.5 V to 5.5 V 130 170 - 110 - 90 - MHz tW pulse width SHCP HIGH or LOW; see Figure 8 VCC = 3.0 V to 3.6 V 5.0 - - 5.0 - 5.0 - ns VCC = 4.5 V to 5.5 V 5.0 - - 5.0 - 5.0 - ns STCP HIGH or LOW; see Figure 9 VCC = 3.0 V to 3.6 V 5.0 - - 5.0 - 5.0 - ns VCC = 4.5 V to 5.5 V 5.0 - - 5.0 - 5.0 - ns MR LOW; see Figure 11 VCC = 3.0 V to 3.6 V 5.0 - - 5.0 - 5.0 - ns VCC = 4.5 V to 5.5 V 5.0 - - 5.0 - 5.0 - ns tsu set-up time DS to SHCP; see Figure 9 VCC = 3.0 V to 3.6 V 3.5 - - 3.5 - 3.5 - ns VCC = 4.5 V to 5.5 V 3.0 - - 3.0 - 3.0 - ns SHCP to STCP; see Figure 10 VCC = 3.0 V to 3.6 V 8.5 - - 8.5 - 8.5 - ns VCC = 4.5 V to 5.5 V 5.0 - - 5.0 - 5.0 - ns th hold time DS to SHCP; see Figure 10 VCC = 3.0 V to 3.6 V 1.5 - - 1.5 - 1.5 - ns VCC = 4.5 V to 5.5 V 2.0 - - 2.0 - 2.0 - ns trec recovery time MR to SHCP; see Figure 11 VCC = 3.0 V to 3.6 V 3.0 - - 3.0 - 3.0 - ns VCC = 4.5 V to 5.5 V 2.5 - - 2.5 - 2.5 - ns CPD power dissipation capacitance fi = 1 MHz; VI = GND to VCC [6] [7] - 180 - - - - - pF 74AHCT595; VCC = 4.5 V to 5.5 V tpd propagation delay SHCP to Q7S; see Figure 8 [2] CL = 15 pF - 3.8 8.2 1.0 9.0 1.0 10.0 ns CL = 50 pF - 5.2 10.0 1.0 11.0 1.0 12.0 ns STCP to Qn; see Figure 9 [2] CL = 15 pF - 4.0 7.4 1.0 8.5 1.0 9.5 ns CL = 50 pF - 5.3 9.0 1.0 10.5 1.0 11.5 ns MR to Q7S; see Figure 11 [3] CL = 15 pF - 4.6 8.2 1.0 9.5 1.0 10.5 ns CL = 50 pF - 5.8 10.5 1.0 11.5 1.0 12.5 ns Table 7. Dynamic characteristics …continued Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 13. Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit Min Typ[1] Max Min Max Min Max |
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