HCF4021 Datasheet, PDF(8/13 Page) STMicroelectronics – Asynchronous parallel input or synchronous serial-in/serial-out 8-stage static shift register

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HCF4021 Datasheet, PDF (8/13 Pages) STMicroelectronics – Asynchronous parallel input or synchronous serial-in/serial-out 8-stage static shift register

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Electrical characteristics

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Figure 4. Test circuit

9''

'87

966

HCF4021

*$06&%

1. Legend: CL = 50 pF or equivalent (includes jig and probe capacitance), RL = 200 Kïï¬ï RT = ZOUT of pulse

generator (typically 50 ï)

Figure 5. Waveform 1: propagation delay times, clock pulse width

(f = 1 MHz; 50 % duty cycle)

&/2&.

W3/+

W7/+

9''

966

W3+/

92+

W7+/

92/

*$06&%

8/13

DocID008216 Rev 3

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