74HC4017; 74HCT4017
Johnson decade counter with 10 decoded outputs
Rev. 7 — 10 May 2021
Product data sheet
1. General description
The 74HC4017; 74HCT4017 is a 5-stage Johnson decade counter with 10 decoded outputs
(Q0 to Q9), an output from the most significant flip-flop (Q5-9), two clock inputs (CP0 and CP1)
and an overriding asynchronous master reset input (MR). The counter is advanced by either a
LOW-to-HIGH transition at CP0 while CP1 is LOW or a HIGH-to-LOW transition at CP1 while CP0
is HIGH. When cascading counters, the Q5-9 output, which is LOW while the counter is in states
5, 6, 7, 8 and 9, can be used to drive the CP0 input of the next counter. A HIGH on MR resets the
counter to zero (Q0 = Q5-9 = HIGH; Q1 to Q9 = LOW) independent of the clock inputs (CP0 and
CP1). Automatic code correction of the counter is provided by an internal circuit: following any
illegal code the counter returns to a proper counting mode within 11 clock pulses. Inputs include
clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in
excess of VCC
.
2. Features and benefits
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Wide supply voltage range from 2.0 V to 6.0 V
CMOS low power dissipation
High noise immunity
Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
Complies with JEDEC standards:
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JESD8C (2.7 V to 3.6 V)
JESD7A (2.0 V to 6.0 V)
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Input levels:
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For 74HC4017: CMOS level
For 74HCT4017: TTL level
ESD protection:
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HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
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Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C
3. Ordering information
Table 1. Ordering information
Type number
Package
Temperature range Name
Description
Version
74HC4017D
74HCT4017D
74HC4017PW
-40 °C to +125 °C
SO16
plastic small outline package; 16 leads;
body width 3.9 mm
SOT109-1
-40 °C to +125 °C
-40 °C to +125 °C
TSSOP16
plastic thin shrink small outline package; 16 leads;
body width 4.4 mm
SOT403-1
SOT763-1
74HC4017BQ
74HCT4017BQ
DHVQFN16 plastic dual in-line compatible thermal enhanced
very thin quad flat package; no leads; 16 terminals;
body 2.5 × 3.5 × 0.85 mm