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74HCT164BQ Datasheet(PDF) 5 Page - NXP Semiconductors |
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74HCT164BQ Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 24 page 9397 750 14693 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 03 — 4 April 2005 5 of 24 Philips Semiconductors 74HC164; 74HCT164 8-bit serial-in, parallel-out shift register 7. Functional description 7.1 Function selection [1] H = HIGH voltage level h = HIGH voltage level one set-up time prior to the LOW-to-HIGH clock transition L = LOW voltage level I = LOW voltage level one set-up time prior to the LOW-to-HIGH clock transition q = lower case letters indicate the state of the referenced input one set-up time prior to the LOW-to-HIGH clock transition ↑ = LOW-to-HIGH clock transition 8. Limiting values GND 7 ground (0 V) CP 8 clock input (LOW-to-HIGH, edge-triggered) MR 9 master reset input (active LOW) Q4 10 output Q5 11 output Q6 12 output Q7 13 output VCC 14 positive supply voltage Table 3: Pin description …continued Symbol Pin Description Table 4: Function table [1] Operating modes Input Output MR CP DSA DSB Q0 Q1 to Q7 Reset (clear) L X X X L L to L Shift H ↑ l l L q0 to q6 H ↑ l h L q0 to q6 H ↑ h l L q0 to q6 H ↑ h h H q0 to q6 Table 5: Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max Unit VCC supply voltage −0.5 +7 V IIK input diode current VI < −0.5 V or VI >VCC + 0.5 V - ±20 mA IOK output diode current VO < −0.5 V or VO >VCC + 0.5 V - ±20 mA IO output source or sink current VO = −0.5 V to VCC + 0.5 V - ±25 mA ICC, IGND VCC or GND current - ±50 mA Tstg storage temperature −65 +150 °C |
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