74390

Dual decade ripple counter

PDF datasheet

    
1CP01 •16Vcc
1MR2152CP0
1Q03142MR
1CP14132Q0
1Q15122CP1
1Q26112Q1
1Q37102Q2
GND892Q3
    
PinSymbolDescription
11CP0clock input, divide-by-2 section (high-to-low, edge-triggered)
21MRasynchronous master reset (active high)
31Q0flip-flop output
41CP1clock input, divide-by-5 section (high-to-low, edge-triggered)
51Q1flip-flop output
61Q2flip-flop output
71Q3flip-flop output
8GNDground
92Q3flip-flop output
102Q2flip-flop output
112Q1flip-flop output
122CP1clock input, divide-by-5 section (high-to-low, edge-triggered)
132Q0flip-flop output
142MRasynchronous master reset (active high)
152CP0clock input, divide-by-2 section (high-to-low, edge-triggered)
16Vccsupply voltage

Specifications

(typical values under recommended operating conditions, unless specified)
ParameterValueUnit
Propagation delay, nCP0 to nQ014 (74HC)
18 (74HCT)
ns
Propagation delay, nCP1 to nQ115 (74HC)
19 (74HCT)
ns
Propagation delay, nCP1 to nQ223 (74HC)
26 (74HCT)
ns
Propagation delay, nCP1 to nQ315 (74HC)
19 (74HCT)
ns
Propagation delay, nMR to nQn16 (74HC)
18 (74HCT)
ns
Maximum clock frequency, nCP0 and nCP166 (74HC)
61 (74HCT)
MHz

Note: Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information.