74HC_HCT194_CNV_2

5 40 15 15 77 35 40 ns ns mhz pf pf hct unit philips

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Unformatted text preview: er dissipation capacitance per package notes 1 and 2 CONDITIONS HC CL = 15 pF; VCC = 5 V 14 11 102 3.5 40 15 15 77 3.5 40 ns ns MHz pF pF HCT UNIT Philips Semiconductors Product specification 4-bit bidirectional universal shift register ORDERING INFORMATION See “74HC/HCT/HCU/HCMOS Logic Package Information”. PIN DESCRIPTION PIN NO. 1 2 3, 4, 5, 6 7 8 9, 10 11 15, 14, 13, 12 16 SYMBOL MR DSR D0 to D3 DSL GND S0, S1 CP Q0 to Q3 VCC NAME AND FUNCTION asynchronous master reset input (active LOW) serial data input (shift right) parallel data inputs serial data input (shift left) ground (0 V) mode control inputs clock input (LOW-to-HIGH edge-triggered) parallel outputs positive supply voltage 74HC/HCT194 Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol. December 1990 3 Philips Semiconductors Product specification 4-bit bidirectional universal shift register 74HC/HCT194 Fig.4 Functional diagram. FUNCTION TABLE INPUTS OPERATING MODES CP reset (clear) hold (“do nothing”) shift left shift right parallel load Notes 1. H h L I q,d X ↑ = HIGH voltage level = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition = LOW voltage level = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition = lower case letters indicate the state of the referenced input (or output) one set-up time prior to the LOW-to-HIGH CP transition = don’t care = LOW-to-HIGH CP transition X X ↑ ↑ ↑ ↑ ↑ MR L H H H H H H S1 X I h h I I h S0...
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