54act299 National Semiconductor Corporation, 54act299 Datasheet
54act299
Available stocks
Related parts for 54act299
54act299 Summary of contents
Page 1
... Universal Shift/Storage Register with Common Parallel I/O Pins General Description The ’AC/’ACT299 is an 8-bit universal shift/storage register with TRI-STATE ® outputs. Four modes of operation are pos- sible: hold (store), shift left, shift right and load data. The par- allel load inputs and flip-flop outputs are multiplexed to re- duce the total number of package pins ...
Page 2
Connection Diagrams (Continued) Pin Names Description CP Clock Pulse Input DS Serial Data Input for Right Shift 0 DS Serial Data Input for Left Shift Mode Select Inputs Asynchronous Master Reset OE , ...
Page 3
Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. DS100252-5 3 www.national.com ...
Page 4
Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ( Input Diode Current ( −0. ...
Page 5
DC Electrical Characteristics For ’AC Family Devices Symbol Parameter (Note 4) I Minimum Dynamic OLD I Output Current OHD I Maximum Quiescent CC Supply Current I Maximum I/O OZT Leakage Current Note 3: All outputs loaded; threshold on input associated ...
Page 6
DC Electrical Characteristics Note 6: I limit for 54ACT 25˚C is identical to 74ACT @ CC Note 7: All outputs loaded; thresholds on input associated with output under test. Note 8: Maximum test duration 2.0 ms, one output loaded at ...
Page 7
AC Operating Requirements Symbol Parameter t Setup Time, HIGH or LOW Hold Time, HIGH or LOW Setup Time, HIGH or LOW s ...
Page 8
AC Electrical Characteristics Symbol Parameter t Output Enable Time PZH Output Enable Time PZL Output Disable Time PHZ Output Disable Time PLZ OE to I/O ...
Page 9
Physical Dimensions inches (millimeters) unless otherwise noted 20 Terminal Ceramic Leadless Chip Carrier (LCC) 20 Lead Ceramic Dual-In-Line Package (J) NS Package Number E20A NS Package Number J20A 9 www.national.com ...
Page 10
Physical Dimensions inches (millimeters) unless otherwise noted (Continued) LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE- VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI- CONDUCTOR ...