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HD74HC674
16-bit Shift Register
Description
The HD74HC674 is a 16-bit parallel-in, serial-out shift register. A three-state input/output (data I/O) port provides access for entering serial data or reading the shift-register word in a recirculating loop. The device has four basic modes of operation: 1. 2. 3. 4. Hold (do nothing) Write (serially via input/output) Read (serially) Load (parallel via data inputs)
Low-to-high-level changes at the chip select input should be made only when the clock input is low to prevent false clocking.
Features
* * * * * High Speed Operation: tpd (CLK to SER/Q15) = 17 ns typ (CL = 50 pF) High Output Current: Fanout of 15 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
Inputs CS H L L L R/W X L H H Mode X X L H CLK X SER/Q15 Z Z Q14n P15 Operation Do nothing Shift and write (serial load) Shift and read Parallel load
HD74HC674
Pin Arrangement
CS CLK R/W NC Mode SER/Q15 P0 P1 P2
1 2 3 4 5 6 7 8 9
24 VCC 23 P15 22 P14 21 P13 20 P12 19 P11 18 P10 17 P9 16 P8 15 P7 14 P6 13 P5
P3 10 P4 11 GND 12
(Top view)
2
HD74HC674
Logic Diagram
IN PE CK P
P0
Q
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
VCC
P15 Mode CS CLK R/W SER/Q15
3
HD74HC674
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 5.0 A A A I OL = 6 mA I OL = 7.8 mA Vin = VCC or GND Vin = VCC or GND, Iout = 0 A Vin = VIH or VIL, Vout = VCC or GND V I OH = -6 mA I OH = -7.8 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 Off-state output current
Iin I CC I OZ
6.0 6.0 6.0
0.5 --
4
HD74HC674
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 25 250 50 43 190 38 33 190 38 33 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ns R/W or CS to Clock ns Mode to Clock ns P to Clock ns SER/Q15 to Clock ns ns ns ns Clock to SER/Q15 Unit MHz Test Conditions
VCC (V) Min Typ Max Min 2.0 4.5 6.0 -- -- -- -- -- -- -- -- -- -- -- -- 80 16 14 -- -- -- -- 17 -- -- 12 -- -- 14 -- -- 6 -- 5 27 32 -- -- --
Propagation delay t PLH time t PHL
2.0 4.5 6.0
200 -- 40 34 -- --
Output enable time
t ZH t ZL
2.0 4.5 6.0
150 -- 30 26 -- --
Output disable time
t HZ t LZ
2.0 4.5 6.0
150 -- 30 26 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 100 20 17 125 25 21 125 25 21 125 25 21 125 25 21
Pulse width
tw
2.0 4.5 6.0
Setup time
t su
2.0 4.5 6.0
100 -- 20 17 -- --
t su
2.0 4.5 6.0
100 -- 20 17 -- --
t su
2.0 4.5 6.0
100 -- 20 17 -- --
t su
2.0 4.5 6.0
100 -- 20 17 -- --
5
HD74HC674
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) (cont)
Ta = 25C Item Hold time Symbol th Ta = -40 to +85C Max -- -- -- -- -- -- -- -- -- 75 15 13 10 pF ns ns Clock to mode ns Clock to P Unit ns Test Conditions Clock to SER/Q15
VCC (V) Min Typ Max Min 2.0 4.5 6.0 5 5 5 5 5 5 5 5 5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- 4 -- 5 -- -- -- -- -- -- -- -- -- 60 12 10 10 5 5 5 5 5 5 5 5 5 -- -- -- --
th
2.0 4.5 6.0
th
2.0 4.5 6.0
Output rise/fall time
t TLH t THL
2.0 4.5 6.0
Input capacitance
Cin
--
6
Unit: mm
24 31.6 32.5 Max 13
1
2.13 Max
1.2
12 5.70 Max
15.0 Max
13.4
15.24
0.51 Min
2.54 Min
2.54 0.25
0.48 0.10
0.25 - 0.05 0 - 15
+ 0.11
Hitachi Code JEDEC EIAJ Weight (reference value)
DP-24 Conforms Conforms 3.1 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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