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HD74AC195
4-bit Parallel-Access Shift Register
Description
This shift register features parallel inputs, parallel outputs, J-K serial inputs, Shift/Load control input, and a direct overriding clear. This shift register can operate in two modes: Parallel load; Shift from Q 0 towards Q3. Parallel loading is accomplished by applying the four bits of data, and taking the PE Input low. The data is loaded into the associated flip-flops and appears at the outputs after the positive transition of the CP input. During parallel loading, serial data flow is inhibited. Serial shifting occurs synchronously when the PE input is high. Serial data for this mode is entered at the J-K inputs. These inputs allow the first stage to perform as a J-K or toggle flip-flop as shown in the function table.
Features
* * * * * Shift Right and Parallel Load Capability J-K (D-Type) Inputs to First Stage Complement Output from Last Stage Asynchronous Master Reset Outputs Source/Sink 24 mA
HD74AC195
Pin Arrangement
MR 1 J2 K3 D0 4 D1 5 D2 6 D3 7 GND 8 (Top view)
16 VCC 15 Q0 14 Q1 13 Q2 12 Q3 11 Q3 10 CP 9 PE
Logic Symbol
PE J CP K MR
D0
D1
D2
D3
Q3
Q0
Q1
Q2
Q3
Pin Names
CP D0 to D3 PE MR J, K Q0 to Q3, Q3 Clock Pulse Input (Active Rising Edge) Parallel Data Inputs Parallel Enable Input Asynchronous Master Reset J-K or D Type Serial Inputs Outputs
2
HD74AC195
Timing Diagram
CP MR J K PE D0 D1 D2 D3 Q0 Q1 Q2 Q3 Serial Shift Clear Load Serial Shift H L H L
Mode Select-Function Table
Inputs Operating Modes Asynchronous Reset Shift, Set First Stage Shift, Reset First Stage Shift, Toggle First Stage Shift, Retain First Stage Parallel Load MR L H H H H H CP X PE X H H H H L J X H L H L X K X H L L H X Dn X X X X X dn Outputs Q0 L H L q0 q0 d0 Q1 L q0 q0 q0 q0 d1 Q2 L q1 q1 q1 q1 d2 Q3 L q2 q2 q2 q2 d3 Q3 H q2 q2 q2 q2 d3
H : HIGH Voltage Level L : LOW Voltage Level X : Immaterial Lower case letters indicate the state of the referenced input (or output) one setup time prior to the LOW-toHIGH transition. : LOW-to-HIGH clock transition.
3
HD74AC195
Logic Diagram
K VCC J
D3
D2
D1
D0 VCC
PE
CP MR
Q3
Q3
Q2
Q1
Q0
DC Characteristics (unless otherwise specified)
Item Maximum quiescent supply current Maximum quiescent supply current Symbol I CC I CC Max 80 8.0 Unit A A Condition VIN = VCC or ground, VCC = 5.5 V, Ta = Worst case VIN = VCC or ground, VCC = 5.5 V, Ta = 25C
4
HD74AC195
AC Characteristics: HD74AC195
Ta = +25C CL = 50 pF Item Maximum clock frequency Propagation delay CP to Qn or Q3 Propagation delay CP to Qn or Q2 Propagation delay MR to Q2 Propagaion delay MR to Qn Note: t PHL t PLH t PHL t PLH Symbol f max VCC (V)*1 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 Min 75 100 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Typ -- -- 9.0 5.5 9.0 6.5 7.5 5.5 6.0 5.0 Max -- -- 13.0 10.0 13.0 10.0 10.5 8.0 9.0 7.0 Ta = -40C to +85C CL = 50 pF Min 65 85 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max -- -- 15.0 11.5 15.0 11.5 12.0 9.5 10.5 8.0 ns ns ns ns Unit MHz
1. Voltage Range 3.3 is 3.3 V 0.3 V Voltage Range 5.0 is 5.0 V 0.5 V
AC Operating Requirements: HD74AC195
Ta = +25C CL = 50 pF Item Setup time, HIGH or LOW J, K or Dn to CP Hold time, HIGH or LOW J, K or Dn to CP Setup time, HIGH or LOW PE to CP Hold time, HIGH or LOW PE to CP Recovery time MR to CP Pulse width tw t rec th t su th Symbol t su VCC (V)*1 Typ 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 Note: 1. Voltage Range 3.3 is 3.3 V 0.3 V Voltage Range 5.0 is 5.0 V 0.5 V 3.0 2.0 -0.5 0.5 3.5 2.5 -2.0 -1.5 -1.5 -1.0 -3.0 -3.0 Ta = -40C to +85C CL = 50 pF Guaranteed Minimum 5.5 4.0 2.0 1.5 5.0 4.0 0.0 0.0 0.5 0.5 5.5 4.5 7.0 5.0 3.6 2.0 7.0 5.0 0.0 0.0 0.5 0.5 7.0 5.0 ns ns ns ns ns Unit ns
5
HD74AC195
Capacitance
Item Input capacitance Power dissipation capacitance Symbol CIN CPD Typ 4.5 125 Unit pF pF Condition VCC = 5.5 V VCC = 5.0 V
6
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
Unit: mm
5.00 5.30 Max 16 9 4.40 1
0.08 *0.22 + 0.07 -
8 0.65 1.0 6.40 0.20 0 - 8 0.50 0.10
0.20 0.06
0.13 M 0.65 Max
*0.17 0.05 0.15 0.04
1.10 Max
0.10
0.07 +0.03 -0.04
*Dimension including the plating thickness Base material dimension
Hitachi Code JEDEC EIAJ Weight (reference value)
TTP-16DA -- -- 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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