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HD74HC4017

Hitachi Semiconductor
Part Number HD74HC4017
Manufacturer Hitachi Semiconductor
Description Decade Counter/Divider
Published Mar 23, 2005
Detailed Description HD74HC4017 Decade Counter/Divider Description The HD74HC4017 is a 5-stage divide-by-10 Johnson counter with ten decoded...
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HD74HC4017
HD74HC4017

Overview
HD74HC4017 Decade Counter/Divider Description The HD74HC4017 is a 5-stage divide-by-10 Johnson counter with ten decoded outputs and a carry-out bit.
High-speed operation and spike-free outputs are obtained by use of the Johnson decade counter configuration.
The ten decoded outputs are normally low and go high only at their respective decimal time periods.
A high signal on Reset R asynchronously clears the decade counter and sets the carry output and Y 0 high.
With CE low, the count is advanced on a low-to-high transition at C input.
Alternatively, if C is high, the count is advanced on a high-to-low transition at CE.
Each decoded output remains high for one full clock cycle.
The carry output is high while Q0, Q 1, Q2, Q3 or Q4 is high, then is low while Q5, Q6, Q7, Q8 or Q9 is high.
Features • • • • • High Speed Operation High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) HD74HC4017 Function Table C L X X CE X H X L X X H Notes: 1.
X: Don’t care 2.
If n < 5 Carry = “H”, Otherwise = “L” R L L H L L L L Decode Output = n n n Q0 n+1 n n n+1 Pin Arrangement Q5 Q1 Q0 Q2 Q6 Q7 Q3 GND 1 2 3 4 5 6 7 8 (Top view) Q1 Q0 Q2 Q6 Q7 Q3 Q5 Reset Clock Clock enable Cout Q9 Q4 16 VCC 15 R 14 C 13 CE 12 Cout 11 Q9 10 Q4 9 Q8 Q8 2 HD74HC4017 DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = –40 to +85°C Max — — — 0.
5 1.
35 1.
8 — — — — — 0.
1 0.
1 0.
1 0.
33 0.
33 ±1.
0 40 µA µA I OL = 4 mA I OL = 5.
2 mA Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = –4 mA I OH = –5.
2 mA Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = –20 µA V Unit V Test Conditions VCC (V) Min Typ Max Min 2.
0 4.
5 6.
0 1.
5 — 3.
15 — 4.
2 — — — — — — — — — — 0.
5 1.
5 3.
15 4.
2 — VIL 2.
0 4.
5 6.
0 1.
35 — 1.
8 — 1.
9 4.
4 5.
9 4.
13 5.
63 — — — Output voltage VOH 2.
0 4.
5 6.
0 4.
5 6.
0 1.
9 2.
0 — 4.
4 4.
5 — 5.
9 6.
0 — 4.
18 — 5.
68 — — — — — — — — — — VOL 2.
0 4.
5 6.
0 4.
5 6.
...


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