Datasheet 74HC595 (Diodes) - 7

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描述8-bit Shift Register With 8-bit Output Register
页数 / 页11 / 7 — 74HC595. Parameter Measurement Information. TEST. VLOAD. Inputs. VCC. …
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74HC595. Parameter Measurement Information. TEST. VLOAD. Inputs. VCC. Voltage Waveform. Pulse Duration and Recovery Time

74HC595 Parameter Measurement Information TEST VLOAD Inputs VCC Voltage Waveform Pulse Duration and Recovery Time

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74HC595 Parameter Measurement Information
From Output RL V Under Test LOAD
TEST VLOAD
tPLH/tPHL Open CL tPLZ/tPZL VCC (see Note A) tPHZ/tPZH GND
Inputs VCC VM CL
VI tr/tf 2.0V VCC 6ns VCC/2 50pF 4.5V VCC 6ns VCC/2 50pF 6.0V VCC 6ns VCC/2 50pF 1/f V MAX CC t Timing V W M Input Vl 0V Input V tSU M VM th VCC 0 V Data V VM Input M 0V MR trec
Voltage Waveform Voltage Waveform Pulse Duration and Recovery Time Set-up and Hold Times
Vl Vl Output VM VM Input V Control M VM 0 V 0 V Output tPZL tPLZ tPLH t V PHL LOAD Waveform 1 VOH VLOAD = VCC VM Output V VM (see Note B) VOL + 10% VOL M VOL tPZH tPHZ Output tPHL tPLH VOH Waveform 2 VOH - 10% VOH VLOAD = GND VM V (see Note B) 0V M Output VM VOL
Voltage Waveform Voltage Waveform Propagation Delay Times Enable and Disable Times Inverting and Non Inverting Outputs
Notes: A. Includes test lead and test apparatus capacitance. B. Output Waveform 1 depends on the internal QN node being low and behaves in this manner based on OE pin. Output Waveform 2 depends on the internal QN node being high and behaves in this manner based on OE pin. C. All pulses are supplied at pulse repetition rate ≤ 10 Hz. D. Inputs are measured separately one transition per measurement. E. tPLH and tPHL are the same as tPD.
Figure 1. Load Circuit and Voltage Waveforms
74HC595 7 of 11 November 2018 Document number: DS35492 Rev. 4 - 2
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