functional characteristics MC74F195 4-Bit Parallel Access Shift Regist
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MC74F195 4-BIT PARALLEL ACCESS SHIFT REGISTER
functional characteristics MC74F195 4-Bit Parallel Access Shift Register indicated Logic Diagram Function Table. device useful wide variety shifting, counting, storage applications. performs serial, parallel, serial-to-parallel, parallel-to-serial data transfers very high speeds. MC74F195 operates primary modes, shift right (Q0-Q1) parallel load, which controlled state Parallel Enable (PE) input. Serial data enters first flip-flop (Q0) inputs when input HIGH, shifted direction Q0-Q1-Q2-Q3 following each LOW-to-HIGH clock transition. inputs provide flexibility type input made special applications, tying pins together simple D-type input made general applications. device appears four common clocked flip-flops when input LOW. After LOW-to-HIGH clock transition, data parallel inputs (D0-D3) transferred respective Q0-Q3 outputs. Shift left operation (Q3-Q2) achieved tying outputs Dn-1 inputs holding input LOW. parallel serial data transfers synchronous, occurring after each LOW-to-HIGH clock transition. MC74F195 utilizes edge-triggering; therefore, there restriction activity inputs logic operation, other than setup hold time requirements. asynchronous Master Reset (MR) input sets outputs LOW, independent other input condition. Shift Right Parallel Load Capability (D-Type) Inputs First Stage Complement Output from Last Stage Asynchronous Master Reset
4-BIT PARALLEL ACCESS SHIFT REGISTER
FASTSCHOTTKY
SUFFIX CERAMIC CASE 620-09
SUFFIX PLASTIC CASE 648-08
SUFFIX SOIC CASE 751B-03
ORDERING INFORMATION CONNECTION DIAGRAM
MC74FXXXJ MC74FXXXN MC74FXXXD Ceramic Plastic SOIC
LOGIC SYMBOL
FAST DATA 4-104
MC74F195
GUARANTEED OPERATING RANGES
Symbol Supply Voltage Operating Ambient Temperature Range Output Current High Output Current Parameter -1.0 Unit
LOGIC DIAGRAM
FUNCTION TABLE
Inputs Operating Modes Asynchronous Reset Shift, First Stage Shift, Reset First Stage Shift, Toggle First Stage Shift, Retain First Stage Parallel Load Outputs
HIGH Voltage Level Voltage Level Don't Care (qn) Lower case letters indicate state referenced input output) setup time prior LOW-to-HIGH clock transition. LOW-to-HIGH clock transition
FAST DATA 4-105
MC74F195
CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits Symbol Parameter Input HIGH Voltage Input Voltage Input Clamp Diode Voltage Output HIGH Voltage Output Voltage Input HIGH Current Input Current Output Short Circuit Current (Note Power Supply Current -0.6 -150 -1.2 Unit VOUT Test Conditions Guaranteed Input HIGH Voltage Guaranteed Input Voltage -1.0 4.75
NOTES: conditions shown MAX, appropriate value specified under guaranteed operating ranges. more than output should shorted time, more than second.
CHARACTERISTICS
54/74F 25°C Symbol fmax tPLH tPHL tPHL tPLH Propagation Delay Propagation Delay, Propagation Delay, Parameter 10.5 70°C Unit
FAST DATA 4-106
MC74F195
OPERATING REQUIREMENTS
25°C Symbol trec Pulse Width, HIGH Pulse Width, Recovery Time, Hold Time, HIGH Setup Time, HIGH Hold Time, HIGH Parameter Setup Time, HIGH 70°C Unit
FAST DATA 4-107
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