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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 A max Low Quiescent Supply Current: ICC (static) = 4 A max (Ta = 25C)
Function Table
CLR L H H H H L H X X H CLK1 X CLK2 X L Q Output Mode Cleared to L Count Count Inhibit Inhibit
HD74HC292/HD74HC294
HD74HC292
Programming Inputs
Frequency Division Q Out TP1 TP2 TP3 Binary Decimal Inhibit Inhibit 2 2 2 2 2 2
24 24 24 24 24 24 2 2 4 4 6 6 8 8
E L L 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
D C B A Binary Decimal L L L L L L L L L L L H Inhibit Inhibit 2 2
2 3 4 5 6 7 8 9
Binary Decimal Binary Decimal Inhibit Inhibit 4 8 16 32 64 128 256 512 1,024 2,048 4,096 8,192 16,384 32,768 65,536 Inhibit Inhibit 2 2 2 2 2
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
Inhibit Inhibit 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512 512
Inhibit Inhibit 2 2 2 2 2 2 2 2 2 2 2 2
17 17 17 17 17 17 17 17 17 17 17 17
Inhibit Inhibit 131,072 131,072 131,072 131,072 131,072 131,072 131,072 131,072 131,072 131,072 131,072 131,072
Inhibit Inhibit 16,777,216 16,777,216 16,777,216 16,777,216 16,777,216 16,777,216 4 4 16 16 64 64 256 256 1,024 1,024 4,096 4,096 16,384 16,384 65,536 65,536 262,144 262,144 1,048,576 1,048,576 4,194,304 4,194,304 16,777,216 16,777,216
HL HH L H
LHL LHL
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
LHHL LHHH HL HL HL HL L L L H
2 2 2
2 2 2 2 2 2
HL HH L H
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
2 2 2 2 2 2 2
HHL HHL
HHHL HHHH L L L L L L L L L L L H
Disabled LOW Disabled LOW 2 2 2 2 2 2
3 3 5 5 7 7 9 9
2 2 2 2
8 8 32 32 128 128 512 512 2,048 2,048 8,192 8,192 32,768 32,768 131,072 131,072
10 10 12 12 14 14 16 16 18 18 20 20 22 22 24 24
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 2 2
HL HH L H
2 2 2 2 2 2 2 2 2 2
LHL LHL
2 2
LHHL LHHH HL HL HL HL L L L H
Disabled LOW Disabled LOW 2 2 2
3 3 5 5 7 7 9 9
2 2 2 2
8 8 32 32 128 128 512 512
11 11 13 13 15 15 17 17
HL HH L H
2 2 2 2 2 2
2 2 2
HHL HHL
2 2
HHHL HHHH
2 2
2 2
2
HD74HC292/HD74HC294
HD74HC294
Programming Inputs Frequency Division Q Output D L L L L L L L L H H H H H H H H C L L L L H H H H L L L L H H H H B L L H H L L H H L L H H L L H H A L H L H L H L H L H L H L H L H Binary Inhibit Inhibit 2 2 2 2 2 2 2 2 2 2 2 2 2 2
2 3 4 5 6 7 8 9
TP Output Decimal Inhibit Inhibit 4 8 16 32 64 128 256 512 1,024 2,048 4,096 8,192 16,384 32,768 Binary Inhibit Inhibit 2 2 2 2 2
9 9 9 9 9
Decimal Inhibit Inhibit 512 512 512 512 512
Disabled LOW 22 2
3 4 5 6 7 8 9
4 8 16 32 64 128 256 512
10 11 12 13 14 15
2 2 2 2 2 2
3
HD74HC292/HD74HC294
Pin Arrangement
HD74HC292
B E TP1 CLK1 CLK2 TP2 Q GND
1 2 3 4 5 6 7 8 (Top view)
16 15 14 13 12 11 10 9
VCC C D TP3 NC CLR A NC
HD74HC294
B A TP CLK1 CLK2 NC Q GND
1 2 3 4 5 6 7 8 (Top view)
16 15 14 13 12 11 10 9
VCC C D NC NC CLR NC NC
4
HD74HC292/HD74HC294
Logic Diagram
HD74HC292
CLR CLK1
R R CK
CLK2
R R MC CK
R
R
TP1
0 1 14 13
D
D
D
R R MC CK
R
R
TP2
D
D
D
D
A B C D E
2 4 8 6
12 11 10 9
R R MC CK
R
R
TP3
D
D
D
8 7 6 5
R R MC CK
R
R
Q
D
D
D
4 3 2
5
HD74HC292/HD74HC294
HD74HC294
CLR CLK1 CLK2
0 1
14 13 12 11 10 9
TP
A B C D
1 2 4 8
8
7 6 5 4 3 2
Q
6
HD74HC292/HD74HC294
DC Characteristics
Ta = 25C Item Input voltage Symbol VIH Ta = -40 to +85C Max -- -- -- 0.5 1.35 1.8 -- -- -- -- -- 0.1 0.1 0.1 0.33 0.33 1.0 40 A A I OL = 4 mA I OL = 5.2 mA Vin = VCC or GND Vin = VCC or GND, Iout = 0 A V I OH = -4 mA I OH = -5.2 mA Vin = VIH or VIL I OL = 20 A V Vin = VIH or VIL I OH = -20 A 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
7
HD74HC292/HD74HC294
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Ta = 25C Item Maximum clock frequency Symbol f max Ta = -40 to +85C Max 4 21 24 750 150 125 -- -- -- -- -- -- 95 19 16 10 pF ns ns ns ns Clock to output Unit MHz Test Conditions
VCC (V) Min Typ Max Min 2.0 4.5 6.0 -- -- -- -- -- -- -- -- -- -- 16 -- 5 27 31 -- -- --
Propagation delay t PLH time
2.0 4.5 6.0
600 -- 120 -- 100 -- -- -- -- -- -- -- 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 -- -- -- -- -4 -- -- 14 - -- 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
--
8
19.20 20.00 Max 16 9 7.40 Max 6.30
Unit: mm
1 1.3
1.11 Max
8
0.51 Min
2.54 Min 5.06 Max
7.62
2.54 0.25
0.48 0.10
0.25 - 0.05 0 - 15
Hitachi Code JEDEC EIAJ Weight (reference value)
+ 0.13
DP-16 Conforms Conforms 1.07 g
Unit: mm
10.06 10.5 Max 16 9
5.5
1
*0.22 0.05 0.20 0.04
8 0.80 Max
2.20 Max
0.20 7.80 + 0.30 -
1.15 0 - 8 0.70 0.20
1.27 *0.42 0.08 0.40 0.06
0.12 M
Hitachi Code JEDEC EIAJ Weight (reference value) FP-16DA -- Conforms 0.24 g
*Dimension including the plating thickness Base material dimension
0.10 0.10
0.15
Unit: mm
9.9 10.3 Max 16 9 3.95 1 1.27 0.635 Max 8
0.11 0.14 + 0.04 - 1.75 Max
*0.22 0.03 0.20 0.03
0.10 6.10 + 0.30 -
1.08 0 - 8
0.67 0.60 + 0.20 -
*0.42 0.08 0.40 0.06
0.15 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
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi's or any third party's patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party's rights, including 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. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi's sales office for any questions regarding this document or Hitachi semiconductor products.
Hitachi, Ltd.
Semiconductor & Integrated Circuits. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109
URL
NorthAmerica : http:semiconductor.hitachi.com/ Europe : http://www.hitachi-eu.com/hel/ecg Asia (Singapore) : http://www.has.hitachi.com.sg/grp3/sicd/index.htm Asia (Taiwan) : http://www.hitachi.com.tw/E/Product/SICD_Frame.htm Asia (HongKong) : http://www.hitachi.com.hk/eng/bo/grp3/index.htm Japan : http://www.hitachi.co.jp/Sicd/indx.htm For further information write to:
Hitachi Semiconductor (America) Inc. 179 East Tasman Drive, San Jose,CA 95134 Tel: <1> (408) 433-1990 Fax: <1>(408) 433-0223 Hitachi Europe GmbH Electronic components Group Dornacher Strae 3 D-85622 Feldkirchen, Munich Germany Tel: <49> (89) 9 9180-0 Fax: <49> (89) 9 29 30 00 Hitachi Europe Ltd. Electronic Components Group. Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 778322 Hitachi Asia Pte. Ltd. 16 Collyer Quay #20-00 Hitachi Tower Singapore 049318 Tel: 535-2100 Fax: 535-1533 Hitachi Asia Ltd. Taipei Branch Office 3F, Hung Kuo Building. No.167, Tun-Hwa North Road, Taipei (105) Tel: <886> (2) 2718-3666 Fax: <886> (2) 2718-8180 Hitachi Asia (Hong Kong) Ltd. Group III (Electronic Components) 7/F., North Tower, World Finance Centre, Harbour City, Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong Tel: <852> (2) 735 9218 Fax: <852> (2) 730 0281 Telex: 40815 HITEC HX
Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.

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