Page 1
HD74AC393
Dual Modulo-16-Counter
Description
The HD74AC393 contains a pair of high speed 4-stage ripple counters. Each half of the HD74AC393
operates as a modulo-16 binary divider, with the last three stages triggered in a ripple fashion. The flipflops are triggered by a High-to-Low transition of their CP inputs. Each half of each circuit type has a
Master Reset input which responds to a High signal by forcing all four outputs to the Low state.
Feature
• Outputs Source/Sink 24 mA
Pin Arrangement
CP
MR
Q
Q1
Q2
Q3
GND
1
2
0
3
4
5
6
7
(Top view)
14
13
12
11
10
CC
V
CP
MR
0
Q
Q1
Q2
9
Q3
8
Page 2
HD74AC393
Logic Symbol (each half)
1, 13
CP
MR Q0 Q1 Q2 Q3
2, 12
4, 10 6, 8
3, 11 5, 9
Vcc=Pin14
GND=Pin7
Pin Names
CP Clock Pulse Input (Active Falling Edge)
MR Asynchronous Master Reset Input (Active High)
Q0 – Q3Flip-flop Outputs
Functional Description
Each half of the HD74AC393 operates in the modulo-16 binary sequence, as indicated in the + 16 Truth
Table. The first flip-flop is triggered by High-to-Low transitions of the CP input signal. Each of the other
flip-flops is triggered by a High-to-Low transition of the Q output of the preceding flip-flop. Thus state
changes of the Q outputs do not occur simultaneously. This means that logic signals derived from
combinations of these outputs will be subject to decoding spikes and, therefore, should not be used as
clocks for other counters, registers or flip-flops. A High signal on MR forces all outputs to the Low state
and prevents counting.
2
Page 3
HD74AC393
Truth Table
Outputs
Count Q
3
Q
2
0L L L L
1L L L H
2L L H L
3L L H H
4L H L L
5L H L H
6L H H L
7L H H H
8H L L L
9H L L H
10HL HL
11HL HH
12 H H L L
13 H H L H
14HHHL
15HHHH
H : High Voltage Level
L : Low Voltage Level
Q
1
Q
0
Logic Diagram (one, half shown)
CP
K
CP J
D
C
Q
MR
Q
0 Q1 Q2 Q3
K
K
K
CP J
D
C
Q
CP J
D
C
Q
CP J
D
C
Q
3
Page 4
HD74AC393
DC Characteristics (unless otherwise specified)
Item Symbol Max Unit Condition
Maximum quiescent supply current I
Maximum quiescent supply current I
CC
CC
AC Characteristics: HD74AC393
80 µAV
8.0 µAV
= VCC or ground, VCC = 5.5 V,
IN
Ta = Worst case
= VCC or ground, VCC = 5.5 V,
IN
Ta = 25°C
Item Symbol V
Maximum clock f
max
Ta = +25°C
C
= 50 pF
L
(V)*1Min Typ Max Min Max Unit
CC
3.3 125 — — 100 — MHz
Ta = –40°C to +85°C
CL = 50 pF
frequency 5.0 150 — — 125 —
Propagation delay t
CP to Q
0
Propagation delay t
CP to Q
0
Propagation delay t
CP to Q
1
Propagation delay t
CP to Q
1
Propagation delay t
CP to Q
2
Propagation delay t
CP to Q
2
Propagation delay t
CP to Q
3
Propagation delay t
CP to Q
3
Propagation delay t
MR to Q0, Q1, Q2 or Q
3
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
PHL
3.3 1.0 8.5 12.0 1.0 13.0 ns
5.0 1.0 6.5 9.0 1.0 10.0
3.3 1.0 8.0 11.5 1.0 12.5 ns
5.0 1.0 6.0 8.5 1.0 9.5
3.3 1.0 12.0 15.0 1.0 16.0 ns
5.0 1.0 9.5 12.0 1.0 13.0
3.3 1.0 11.5 14.5 1.0 15.5 ns
5.0 1.0 9.0 11.5 1.0 12.5
3.3 1.0 15.0 18.0 1.0 19.5 ns
5.0 1.0 12.0 14.5 1.0 16.0
3.3 1.0 14.5 17.5 1.0 19.0 ns
5.0 1.0 11.5 14.0 1.0 15.5
3.3 1.0 18.0 20.5 1.0 22.0 ns
5.0 1.0 14.5 17.0 1.0 18.5
3.3 1.0 17.5 20.0 1.0 21.5 ns
5.0 1.0 14.0 16.5 1.0 17.5
3.3 1.0 10.5 14.0 1.0 15.0 ns
5.0 1.0 8.5 11.0 1.0 12.0
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
4
Page 5
HD74AC393
AC Operating Requirements: HD74AC393
Ta = –40°C
Ta = +25°C
C
= 50 pF
L
Item Symbol V
Pulse width CP t
w
(V)*1Typ Guaranteed Minimum Unit
CC
3.3 3.5 5.5 7.0 ns
5.0 2.5 4.5 5.0
Recovery time MR to CP t
rec
3.3 –2.5 0.0 0.0 ns
5.0 –2.5 0.0 0.0
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Capacitance
Item Symbol Typ Unit Condition
Input capacitance C
Power dissipation capacitance C
IN
PD
4.5 pF VCC = 5.5 V
50 pF VCC = 5.0 V
to +85°C
CL = 50 pF
5
Page 6
1
19.20
20.32 Max
1.30
Unit: mm
814
6.30
7.40 Max
7
2.54 ± 0.25
2.39 Max
0.48 ± 0.10
2.54 Min 5.06 Max
0.51 Min
Hitachi Code
JEDEC
EIAJ
Weight
7.62
+ 0.10
0.25
– 0.05
0° – 15°
(reference value)
DP-14
Conforms
Conforms
0.97 g
Page 7
14
1.27
10.5 Max
1
10.06
1.42 Max
Unit: mm
8
5.5
7
+ 0.20
7.80
– 0.30
2.20 Max
*0.22 ± 0.05
1.15
0.20 ± 0.04
0° – 8°
0.70 ± 0.20
*0.42 ± 0.08
0.40 ± 0.06
*Dimension including the plating thickness
Base material dimension
0.12
0.10 ± 0.10
0.15
M
Hitachi Code
JEDEC
EIAJ
(reference value)
Weight
FP-14DA
—
Conforms
0.23 g
Page 8
9.05 Max
14
Unit: mm
8.65
8
*Pd plating
1
0.635 Max
1.27
*0.40 ± 0.06
7
+ 0.11
0.25
3.95
– 0.04
0.14
0.15
1.75 Max
M
6.10
1.08
*0.20 ± 0.05
0.60
Hitachi Code
JEDEC
EIAJ
Weight
+ 0.10
– 0.30
0° – 8°
+ 0.67
– 0.20
(reference value)
FP-14DN
Conforms
Conforms
0.13 g
Page 9
14 8
17
+0.08
*0.22
–0.07
0.20 ± 0.06
5.00
5.30 Max
0.83 Max
0.65
0.13
Unit: mm
4.40
1.0
M
6.40 ± 0.20
0.10
1.10 Max
*Dimension including the plating thickness
Base material dimension
0.15 ± 0.04
*0.17 ± 0.05
+0.03
–0.04
0.07
0° – 8°
Hitachi Code
JEDEC
EIAJ
(reference value)
Weight
0.50 ± 0.10
TTP-14D
—
—
0.05 g
Page 10
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/
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
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
Hitachi Europe GmbH
Electronic components Group
Dornacher Stra§e 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
Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.
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
Loading...