HIT HD74HC4017 Datasheet
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 Y0 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, Q1, 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 CE R Decode Output = n
LX L n
XH L n
XX H Q
L L n + 1
XL n
X Ln
H L n + 1
Notes: 1. X: Don’t care
2. If n < 5 Carry = “H”, Otherwise = “L”
Pin Arrangement
0
Q
Q
Q
Q
Q
Q
Q
GND
1
5
Q
5
2
1
3
0
4
2
5
6
6
7
7
3
Q
Q
Q
Q
Q
Q
Reset
1
0
2
6
7
3
Clock
Clock
enable
Cout
Q
Q
Q
8
9
4
8
16
15
14
13
12
11
10
V
CC
R
C
CE
Cout
Q
9
Q
4
Q
9
8
(Top view)
2
HD74HC4017
DC Characteristics
Ta = –40 to
Ta = 25°C
Item Symbol V
Input voltage V
IH
(V) Min Typ Max Min Max Unit Test Conditions
CC
2.0 1.5 — — 1.5 — V
4.5 3.15 — — 3.15 —
6.0 4.2 — — 4.2 —
V
IL
2.0 — — 0.5 — 0.5 V
4.5 — — 1.35 — 1.35
6.0 — — 1.8 — 1.8
Output voltage V
OH
2.0 1.9 2.0 — 1.9 — V Vin = VIH or VILIOH = –20 µA
4.5 4.4 4.5 — 4.4 —
6.0 5.9 6.0 — 5.9 —
4.5 4.18 — — 4.13 — IOH = –4 mA
6.0 5.68 — — 5.63 — IOH = –5.2 mA
V
OL
2.0 — 0.0 0.1 — 0.1 V Vin = VIH or VILIOL = 20 µA
4.5 — 0.0 0.1 — 0.1
6.0 — 0.0 0.1 — 0.1
4.5 — — 0.26 — 0.33 IOL = 4 mA
6.0 — — 0.26 — 0.33 IOL = 5.2 mA
Input current Iin 6.0 — — ±0.1 — ±1.0 µA Vin = VCC or GND
Quiescent supply
I
CC
6.0 — — 4.0 — 40 µA Vin = VCC or GND, Iout = 0 µA
current
+85°C
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = –40 to
Ta = 25°C
Item Symbol V
Maximum clock f
max
(V) Min Typ Max Min Max Unit Test Conditions
CC
2.0 — — 6 — 5 MHz
frequency 4.5 — — 31 — 27
6.0 — — 36 — 31
Propagation delay t
time t
PLH
PHL
2.0 — — 230 — 290 ns C to Q
4.5 — 20 46 — 58
6.0 — — 39 — 49
+85°C
3
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