4-Bit Parallel Access Shift Register Functional Diagram June

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4-Bit Parallel Access Shift Register Functional Diagram June

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CD54HC195/3A
4-Bit Parallel Access Shift Register
Functional Diagram
June 1997
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Description
CD54HC195/3A 4-bit parallel access register useful wide variety shifting, counting storage applications. performs serial, parallel, serial-to-parallel, parallel-toserial data transfers very high speeds. modes operation, shift register parallel load, controlled state Parallel Enable (PE) input. Serial data enter first flip-flop (Q0) inputs when input high, shifted direction following each LOW-toHIGH clock transition. inputs provide flexibility JK-type input special applications and, tying pins together, simple D-type input general applications. device appears four common-clocked flip-flops when input LOW. After LOW-to-HIGH clock transition, data parallel inputs transferred respective outputs. Shift-left operation achieved tying outputs inputs holding input low. parallel serial data transfers synchronous, occurring after each LOW-to-HIGH clock transition. CD54HC/ HCT195 series utilizes edge triggering; therefore, there restriction activity inputs logic operations, other than setup hold time requirements. asynchronous Master Reset (MR) input sets outputs LOW, independent other input condition.
Absolute Maximum Ratings
Supply Voltage, Voltages Referenced -0.5V +7.0V Input Voltage Range, Inputs, -0.5V +0.5V Output Voltage Range, Outputs, VOUT -0.5V +0.5V Input Diode Current, -0.5V 0.5V .±20mA Output Diode Current, -0.5V 0.5V .±20mA Drain Current, Output, -0.5V 0.5V Standard Output .±25mA Driver Output. .±35mA Current, Standard Output .±50mA Driver Output. .±70mA Power Dissipation Package, -55oC +100oC (Package 500mW +100oC +125oC (Package Derate Linearly 8mW/ 300mW Operating Temperature Range, Package Type -55oC +125oC Storage Temperature, TSTG -65oC +150oC Lead Temperature (During Soldering) Distance 1/16in. 1/32in. (1.59mm 0.79mm) From Case +265oC Unit Inserted Into Board (Min Thickness 1/16in., 1.59mm) With Solder Contacting Lead Tips Only. +300oC
CAUTION: Stresses above those listed "Absolute Maximum Ratings" cause permanent damage device. This stress only rating operation device these other conditions above those indicated operational sections this specification implied.
Recommended Operating Conditions
Supply Voltage Range, Full Package Temperature Range CD54HC Types CD54HCT Types .4.5V 5.5V Input Output Voltage, VIN, VOUT Operating Temperature Range, -55oC +125oC Input Rise Fall Times, 1000ns 4.5V 500ns 400ns
CAUTION: These devices sensitive electrostatic discharge. Users should follow proper I.C. Handling Procedures. Copyright
Harris Corporation 1994
File Number
3802

4-Bit Parallel Access Shift Register Functional Diagram June

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