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HD74HC4024
7-stage Binary Counter
Description
The HD74HC4024 is a 7-stage counter. This device is incremented on the falling edge (negative transition) of the input clock, and all its output is reset to a low level by applying a logical high on its reset input.
Features
• • • • • High Speed Operation: tpd (Clock to Q1) = 14 ns typ (CL = 50 pF) 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)
Function Table
Clock L L H H Reset L H L H L H L H Outputs State No change All outputs are low No change All outputs are low No change All outputs are low Advance to next state All outputs are low
HD74HC4024
Pin Arrangement
Clock Reset Q7 Q6 Q5 Q4 GND
1 2 3 4 5 6 7 (Top view) R Q7 Q6 Q5 Q4 Q3 C
14 13 Q1 Q2 12 11 10 9 8
VCC NC Q1 Q2 NC Q3 NC
Block Diagram
Clock
C
Q
C
Q
C
Q
C
Q
R Reset
Q
R
Q
R
Q
R
Q
Q1
Q2
Q6
Q7
2
HD74HC4024
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 6.0
0.0 0.1 0.0 0.1 0.0 0.1 — — — —
0.26 — 0.26 — ±0.1 — 4.0 —
Input current Quiescent supply current
Iin I CC
6.0 6.0
3
HD74HC4024
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25°C Item Maximum clock frequency Symbol f max Ta = –40 to +85°C Max 4 20 24 230 46 39 230 46 39 230 46 39 — — — — — — 95 19 16 10 pF ns ns ns ns Reset to output ns Clock to Q1 ns Clock to Q1 Unit MHz Test Conditions
VCC (V) Min Typ Max Min 2.0 4.5 6.0 — — — — — — — — — — — — — — — — 14 — — 14 — — 13 — 5 25 29 — — —
Propagation delay t PLH time
2.0 4.5 6.0
185 — 37 31 — —
t PHL
2.0 4.5 6.0
185 — 37 31 — —
t PHL
2.0 4.5 6.0
185 — 37 31 — — — — — — 75 15 13 10 — — 125 25 21 100 20 17 — — — —
Removal time
t rem
2.0 4.5 6.0
100 — 20 17 80 16 14 — — — — 0 — — 4 — — 5 — 5
Pulse width
tw
2.0 4.5 6.0
Output rise/fall time
t TLH t THL
2.0 4.5 6.0
Input capacitance
Cin
—
4
Unit: mm
19.20 20.32 Max 14 8 6.30 7.40 Max 1
2.39 Max
1.30
7 7.62
0.51 Min
2.54 Min 5.06 Max
2.54 ± 0.25
0.48 ± 0.10
0.25 – 0.05 0° – 15°
+ 0.10
Hitachi Code JEDEC EIAJ Weight (reference value)
DP-14 Conforms Conforms 0.97 g
Unit: mm
10.06 10.5 Max 14 8 5.5 1 7 *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 7.80 – 0.30 1.15 0° – 8°
+ 0.20
1.42 Max
1.27 *0.42 ± 0.08 0.40 ± 0.06
0.10 ± 0.10
0.70 ± 0.20
0.15 0.12 M
Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DA — Conforms 0.23 g
*Dimensio.