(China (Mainland))
Product Summary
The SN54LS490J is a dual decade counter. It contains a pair of high-speed 4-stage ripple counters. Each half of the SN54LS490J has individual Clock, Master Reset and Master Set (Preset 9) inputs. Each section counts in the 8, 4, 2, 1 BCD code.
Parametrics
SN54LS490J absolute maximum ratings: (1)VCC, Supply Voltage: 4.5 to 5.5V; 5.0V typ; (2)TA, Operating Ambient Temperature Range: -55 to 125℃; 25℃ typ; (3)IOH, Output Current — High: 0.4 mA; (4)IOL, Output Current — Low: 4.0 mA.
Features
SN54LS490J features: (1)Dual Version of SN54/74LS490; (2)Individual Asynchronous Clear and Preset to 9 for Each Counter; (3)Count Frequency — Typically 65 MHz; (4)Input Clamp Diodes Limit High-Speed Termination Effects.
Diagrams
 |
 SN54 |
Apex Tool Group (Formerly Cooper Tools) |
Pliers & Tweezers Xcelite 5" Cutter Side Cut Long Nose |
Data Sheet |
|
|
||||||
 |
SN54/74LS147 |
Other |
|
Data Sheet |
Negotiable |
|
||||||
|
SN54/74LS155 |
Other |
|
Data Sheet |
Negotiable |
|
||||||
|
SN54/74LS156 |
Other |
|
Data Sheet |
Negotiable |
|
||||||
|
SN54/74LS160A |
Other |
|
Data Sheet |
Negotiable |
|
||||||
|
SN54/74LS161A |
Other |
|
Data Sheet |
Negotiable |
|
||||||
