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HD74HC93
4-bit Binary Counter
Description
The HD74HC93 is a 4-bit ripple type counter consisting of four master/slave flip-flops that are internally connected to provide separate divide-by-two and divide-by-eight sections. Each section has a separate clock input which initiates state changes of the counter on the high-to-low clock transition. State changes of the Q outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and should not be used as clocks or as strobes except when gated with the clock of the HD74HC93. QA is the output of the divide-by-two section; Q B, QC, and QD are the binary outputs of the divide-by-eight section. A gated AND asynchronous reset is provided which resets all the flip-flops. Because the output from the divide-by-two section is not internally connected to the succeeding stages, the devices may be operated in various counting modes: 1. A 4-bit rippl counter - The QA output must be externally connected to the clock B input. The input count pulses are applied to the clock A inputl. Simultaneous divisions of 2, 4, 8 and 16 are performed at the QA, QB, QC and QD outputs. 2. A 3-bit ripple counter - The input count pulses are applied to the clock B input. Simultaneous frequency divisions of 2, 4 and 8 are available at the QB, QC and QD outputs. Independent use of the first flip-flop is available if the reset function coincides with reset of the 3-bit ripple-through counter.
Features
* * * * * High Speed Operation: tpd (A to QA) = 13 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)
HD74HC93
Function Table
Reset/Count Function Table
Reset Inputs R0(1) H L x R0(2) H x L Outputs QD L Count Count QC L QB L QA L
BCD Count Sequence
Outputs Count 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QD L L L L L L L L H H H H H H H H QC L L L L H H H H L L L L H H H H QB L L H H L L H H L L H H L L H H QA L H L H L H L H L H L H L H L H
Notes: Output Q A is connected to input B for BCD count.
2
HD74HC93
Pin Arrangement
B R0(1) R0(2) NC Vcc NC NC
1 2 3 4 5 6 QC 7 (Top View) QB B R0(1) R0(2) A
14 A 13 NC QA QD 12 QA 11 QD 10 GND 9 8 QB QC
3
HD74HC93
Block Diagram
C Input A C R
Q Q QA
C Input B C R
Q Q QB
C C R
Q Q QC
C C R R0(1) R0(2)
Q Q QD
4
HD74HC93
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
5
HD74HC93
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 25 150 30 26 425 85 72 165 33 28 230 46 39 275 55 47 220 44 37 95 19 16 10 pF ns ns Set-to-0 to Q A to D ns B to Q D ns B to Q C ns B to Q B ns A to Q D ns A to Q A Unit MHz Test Conditions
VCC (V) Min Typ Max Min 2.0 4.5 6.0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 13 -- -- 42 -- -- 13 -- -- 21 -- -- 27 -- -- 13 -- -- 5 -- 5 5 27 32 -- -- --
Propagation delay t PLH time t PHL
2.0 4.5 6.0
120 -- 24 20 -- --
t PLH t PHL
2.0 4.5 6.0
340 -- 68 58 -- --
t PLH t PHL
2.0 4.5 6.0
130 -- 26 22 -- --
t PLH t PHL
2.0 4.5 6.0
185 -- 37 31 -- --
t PLH t PHL
2.0 4.5 6.0
220 -- 44 37 -- --
t PLH t PHL
2.0 4.5 6.0
175 -- 35 30 75 15 13 10 -- -- -- -- -- --
Output rise/fall time
t TLH t THL
2.0 4.5 6.0
Input capacitance
Cin
--
6
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 0.70 0.20
+ 0.20
1.42 Max
1.27 *0.42 0.08 0.40 0.06
0.12 M
Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DA -- Conforms 0.23 g
*Dimension including the plating thickness Base material dimension
0.10 0.10 0.15
Unit: mm
8.65 9.05 Max 14 8 3.95 1 1.75 Max 7
*0.20 0.05
6.10 - 0.30 1.08
+ 0.10
0.635 Max
0 - 8
0.11 0.14 + 0.04 -
1.27 *0.40 0.06
0.67 0.60 + 0.20 -
0.15 0.25 M
Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DN Conforms Conforms 0.13 g
*Pd plating
Unit: mm
5.00 5.30 Max 14 8 4.40 1 *0.22+0.08 -0.07 7 0.65 1.0 0.13 M 0.83 Max *0.17 0.05 0.15 0.04 1.10 Max 6.40 0.20 0 - 8 0.50 0.10 0.20 0.06
0.10
0.07 +0.03 -0.04
*Dimension including the plating thickness Base material dimension
Hitachi Code JEDEC EIAJ Weight (reference value)
TTP-14D -- -- 0.05 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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