HITACHI HD74HC292

HD74HC292/HD74HC294
Programmable Frequency Divider/Digital Timer
Description
This device divides the incoming clock frequency by a number (a power of 2) that is preset by the
Programming inputs. It has two Clock inputs, either of which may be used as a clock inhibit. The device
also has an active-low Reset, which initializes the internal flip-flop states. Test Point outputs (TP1, TP2,
TP3) are provided with HD74HC292 to facilitate incoming inspections.
Test Point output is provided with HD74HC294 to facilitate incoming inspections.
Features
•
•
•
•
•
High Speed Operation: tpd (Clock to Q) = 16 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
CLR
CLK1
CLK2
Q Output Mode
L
X
X
Cleared to L
L
Count
H
H
L
Count
H
H
X
Inhibit
H
X
H
Inhibit
HD74HC292/HD74HC294
HD74HC292
Programming
Inputs
Frequency Division
Q Out
TP1
TP2
TP3
E
D C B A Binary Decimal
L
L
L
L
L
Inhibit
Inhibit
Inhibit
Inhibit
Inhibit
Inhibit
Inhibit
Inhibit
L
L
L
L
H
Inhibit
Inhibit
Inhibit
Inhibit
Inhibit
Inhibit
Inhibit
Inhibit
H L
2
4
9
512
2
17
131,072
24
16,777,216
2
17
24
16,777,216
2
17
24
16,777,216
2
17
24
16,777,216
2
17
24
16,777,216
2
17
24
16,777,216
2
17
2
4
2
17
2
4
2
17
4
16
2
17
4
16
2
17
6
64
2
17
6
64
8
256
8
256
2
10
1,024
2
10
1,024
12
4,096
12
4,096
2
14
16,384
2
14
16,384
2
16
65,536
2
16
65,536
2
18
262,144
2
18
262,144
2
20
1,048,576
2
20
1,048,576
22
4,194,304
22
4,194,304
24
16,777,216
24
16,777,216
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
2
L
L
L
L
H H
L H L
L H L
L
H
L H H L
L H H H
H L
H L
H L
H L
L
L
L
H
H L
H H
H H L
H H L
L
H
H H H L
H H H H
L
L
L
L
L
L
L
L
L
L
L
H
H L
H H
L H L
L H L
L
H
L H H L
L H H H
H L
H L
H L
H L
L
L
L
H
H L
H H
H H L
H H L
L
H
H H H L
H H H H
2
3
2
4
2
5
2
6
2
7
2
8
2
9
2
10
2
11
2
12
2
13
2
14
2
15
2
16
2
17
2
18
2
19
2
20
2
21
2
22
2
23
2
24
2
25
2
26
2
27
2
28
2
29
2
30
2
31
2
Binary Decimal Binary Decimal
8
16
32
64
128
256
512
1,024
2,048
4,096
8,192
16,384
32,768
65,536
131,072
262,144
524,288
1,048,576
2,097,152
4,194,304
8,388,608
16,777,216
33,554,432
67,108,864
134,217,728
268,435,456
536,870,912
1,073,741,824
2,147,483,648
2
9
2
2
9
2
9
2
9
9
2
9
2
9
2
9
2
9
2
9
2
9
2
2
9
2
9
2
9
9
2
9
2
9
2
9
2
9
2
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
Disabled LOW
Disabled LOW
2
3
2
3
2
5
5
2
7
2
7
2
9
2
9
2
8
8
32
32
128
128
512
512
Binary Decimal
131,072
131,072
131,072
131,072
131,072
131,072
131,072
131,072
131,072
131,072
131,072
Disabled LOW
Disabled LOW
3
2
3
2
5
2
5
2
7
2
7
2
9
2
9
2
2
11
2
11
13
2
13
2
2
15
2
15
2
17
2
17
8
8
32
32
128
128
512
512
2,048
2,048
8,192
8,192
32,768
32,768
131,072
131,072
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
HD74HC292/HD74HC294
HD74HC294
Programming Inputs
Frequency Division
Q Output
TP Output
D
C
B
A
L
L
L
L
Inhibit
Inhibit
Inhibit
Inhibit
L
L
L
H
Inhibit
Inhibit
Inhibit
Inhibit
L
2
2
4
9
512
2
3
9
512
2
4
2
9
512
2
5
2
9
512
2
6
64
2
9
512
2
7
128
2
8
256
22
4
2
9
512
3
8
4
16
5
32
6
64
7
128
2
8
256
2
9
512
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
H
H
H
H
L
L
L
L
H
H
H
H
H
H
L
L
H
H
L
L
H
H
L
L
H
H
H
L
H
L
H
L
H
L
H
L
H
L
H
Binary
Decimal
2
10
2
11
2
12
2
13
2
14
2
15
Binary
8
16
32
1,024
2,048
4,096
8,192
16,384
32,768
Decimal
2
2
Disabled LOW
2
2
2
2
2
3
HD74HC292/HD74HC294
Pin Arrangement
HD74HC292
B
1
16
VCC
E
2
15
C
TP1
3
14
D
CLK1
4
13
TP3
CLK2
5
12
NC
TP2
6
11
CLR
Q
7
10
A
GND
8
9
NC
(Top view)
HD74HC294
B
1
16
VCC
A
2
15
C
TP
3
14
D
CLK1
4
13
NC
CLK2
5
12
NC
NC
6
11
CLR
Q
7
10
NC
GND
8
9
NC
(Top view)
4
HD74HC292/HD74HC294
Logic Diagram
HD74HC292
CLR
CLK1
R
CLK2
R
CK
R R MC
R
R
TP1
CK
0
1
14
13
D
D
D
R R MC
R
CK
D
D
D
R
TP2
D
12
11
10
9
A
B
2
C
D
E
4
R R MC
D
8
6
R
R
TP3
R
R
Q
CK
D
D
8
7
6
5
R R MC
CK
D
D
D
4
3
2
5
HD74HC292/HD74HC294
HD74HC294
CLR
CLK1
CLK2
0
1
14
13
12
11
10
9
A
B
C
D
1
TP
8
2
4
8
7
6
5
4
3
2
6
Q
HD74HC292/HD74HC294
DC Characteristics
Ta = –40 to
+85°C
Ta = 25°C
Item
Symbol
VCC (V) Min Typ Max Min
Max
Unit
Input voltage
VIH
2.0
1.5 —
—
1.5
—
V
4.5
3.15 —
—
3.15
—
6.0
4.2 —
—
4.2
—
2.0
—
—
0.5
—
0.5
4.5
—
—
1.35 —
1.35
6.0
—
—
1.8
—
1.8
2.0
1.9 2.0 —
1.9
—
4.5
4.4 4.5 —
4.4
—
6.0
5.9 6.0 —
5.9
—
4.5
4.18 —
—
4.13
—
I OH = –4 mA
6.0
5.68 —
—
5.63
—
I OH = –5.2 mA
2.0
—
0.0 0.1
—
0.1
4.5
—
0.0 0.1
—
0.1
6.0
—
0.0 0.1
—
0.1
4.5
—
—
0.26 —
0.33
I OL = 4 mA
6.0
—
—
0.26 —
0.33
I OL = 5.2 mA
VIL
Output voltage
VOH
VOL
Test Conditions
V
V
V
Vin = VIH or VIL I OH = –20 µA
Vin = VIH or VIL I OL = 20 µA
Input current
Iin
6.0
—
—
±0.1 —
±1.0
µA
Vin = VCC or GND
Quiescent supply
current
I CC
6.0
—
—
4.0
40
µA
Vin = VCC or GND, Iout = 0 µA
—
7
HD74HC292/HD74HC294
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = –40 to
+85°C
Ta = 25°C
Item
Symbol
VCC (V) Min Typ Max Min
Max
Unit
Maximum clock
f max
2.0
—
—
5
—
4
MHz
4.5
—
—
27
—
21
6.0
—
—
31
—
24
Propagation delay t PLH
2.0
—
—
600 —
750
time
4.5
—
16
120 —
150
6.0
—
—
100 —
125
2.0
100 —
—
125
—
4.5
20
–4
—
25
—
6.0
17
—
—
21
—
2.0
80
—
—
100
—
4.5
16
14
—
20
—
6.0
14
–
—
17
—
frequency
Removal time
Pulse width
t rem
tw
Output rise/fall
t TLH
2.0
—
—
75
—
95
time
t THL
4.5
—
5
15
—
19
6.0
—
—
13
—
16
—
—
5
10
—
10
Input capacitance
8
Cin
ns
ns
ns
ns
pF
Test Conditions
Clock to output
Unit: mm
19.20
20.00 Max
1
7.40 Max
9
6.30
16
8
1.3
0.48 ± 0.10
2.54 Min 5.06 Max
2.54 ± 0.25
0.51 Min
1.11 Max
7.62
+ 0.13
0.25 – 0.05
0° – 15°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
DP-16
Conforms
Conforms
1.07 g
Unit: mm
10.06
10.5 Max
9
1
8
1.27
*0.42 ± 0.08
0.40 ± 0.06
0.10 ± 0.10
0.80 Max
*0.22 ± 0.05
0.20 ± 0.04
2.20 Max
5.5
16
0.20
7.80 +– 0.30
1.15
0° – 8°
0.70 ± 0.20
0.15
0.12 M
*Dimension including the plating thickness
Base material dimension
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-16DA
—
Conforms
0.24 g
Unit: mm
9.9
10.3 Max
9
1
8
0.635 Max
*0.42 ± 0.08
0.40 ± 0.06
0.15
*0.22 ± 0.03
0.20 ± 0.03
1.27
0.11
0.14 +– 0.04
1.75 Max
3.95
16
0.10
6.10 +– 0.30
1.08
0° – 8°
0.67
0.60 +– 0.20
0.25 M
*Dimension including the plating thickness
Base material dimension
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-16DN
Conforms
Conforms
0.15 g
Cautions
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copyright, trademark, or other intellectual property rights for information contained in this document.
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intellectual property rights, in connection with use of the information contained in this document.
2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.
5. This product is not designed to be radiation resistant.
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written approval from Hitachi.
7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
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