54F676LM Datasheet

16-bit Serial/parallel-in, Serial-out Shift Register


Features, Applications

The 'F676 contains 16 flip-flops with provision for synchronous parallel or serial entry and serial output When the Mode (M) input is HIGH information present on the parallel data � P15) inputs is entered on the falling edge of the Clock Pulse (CP) input signal When M is LOW data is shifted out of the most significant bit position while information present on the Serial (SI) input shifts into the least significant bit position A HIGH signal on the Chip Select (CS) input prevents both parallel and serial operations


16-bit parallel-to-serial conversion 16-bit serial-in serial-out Chip select control Slim 24 lead 300 mil package

Package Description (0 600 Wide) Molded Dual-In-Line (0 300 Wide) Molded Dual-In-Line (0 600 Wide) Ceramic Dual-In-Line (0 300 Wide) Ceramic Dual-In-Line (0 300 Wide) Molded Small Outline JEDEC 24-Lead Cerpack 24-Lead Ceramic Leadless Chip Carrier Type C

Note 1 Devices also available in 13 reel Use suffix e SCX

Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB

TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation 9588 RRD-B30M105 Printed S A

54F 74F Pin Names SI SO Description Parallel Data Inputs Chip Select Input (Active LOW) Clock Pulse Input (Active LOW) Mode Select Input Serial Data Input Serial Output UL HIGH LOW Input IIH IIL Output IOH IOL 20 mA

The 16-bit shift register operates in one of three modes as indicated in the Shift Register Operations Table HOLD a HIGH signal on the Chip Select (CS) input prevents clocking and data is stored in the sixteen registers Shift Serial Load data present on the SI pin shifts into the register on the falling edge of CP Data enters the Q0 position and shifts toward Q15 on successive clocks finally appearing on the SO pin Parallel Load data present � P15 are entered into the register on the falling edge of CP The SO output represents the Q15 register output To prevent false clocking CP must be LOW during a LOWto-HIGH transition H L Shift Register Operations Table Control Input X K Hold Shift Serial Load Parallel Load Operating Mode

H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial K e HIGH-to-LOW Transition

If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Plastic VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC e 0V) Standard Output TRI-STATE Output Current Applied to Output in LOW State (Max)

Free Air Ambient Temperature Military Commercial Supply Voltage Military Commercial

Note 1 Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired Functional operation under these conditions is not implied Note 2 Either voltage limit or current limit is sufficient to protect inputs

Symbol VIH VIL VCD VOH Parameter Min Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Current Input HIGH Current Breakdown Test Output HIGH Leakage Current Input Leakage Test Output Leakage Circuit Current Input LOW Current Output Short-Circuit Current Power Supply Current

Conditions Recognized as a HIGH Signal Recognized as a LOW Signal

IIN b18 mA IOH b1 mA IOH b1 mA IOH b1 mA IOL 20 mA IOL 20 mA VIN 2 7V VIN 7 0V VOUT e VCC IID 9 mA All Other Pins Grounded VIOD 150 mV All Other Pins Grounded VIN 0 5V VOUT e 0V



Download DataSheet PDF View and Download

Manufacturer information

Warm Hint

What HQEW.NET can offer here?
1. www.hqew.net/product-data provides numerous and various electronic part data-sheet and technology document here., if it can't be shown, Please feel free to ask us for it.
2. www.hqew.net/news provides the latest information of the semiconductor industry or the electronics industry for you.
3. www.hqew.net provides verified suppliers and numerous electronic components for your demand and business.
Any questions you can contact us by email cs@hqew.net.
related datasheet
Browse Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9
Contact Us


One to One Customer Service