SN74LS166 datasheet, PDF - EEWORLD Datasheet

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SN74LS166: DescriptionLOW POWER SCHOTTKY; File Size134KB，8 Pages; ManufacturerON Semiconductor; Websitehttp://www.onsemi.cn

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SN74LS166 Overview

LOW POWER SCHOTTKY

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SN74LS166

8-Bit Shift Registers

The SN74LS166 is an 8-Bit Shift Register. Designed with all inputs

buffered, the drive requirements are lowered to one 74LS standard

load. By utilizing input clamping diodes, switching transients are

minimized and system design simplified.

The LS166 is a parallel-in or serial-in, serial-out shift register and

has a complexity of 77 equivalent gates with gated clock inputs and an

overriding clear input. The shift/load input establishes the parallel-in

or serial-in mode. When high, this input enables the serial data input

and couples the eight flip-flops for serial shifting with each clock

pulse. Synchronous loading occurs on the next clock pulse when this is

low and the parallel data inputs are enabled. Serial data flow is

inhibited during parallel loading. Clocking is done on the low-to-high

level edge of the clock pulse via a two input positive NOR gate, which

permits one input to be used as a clock enable or clock inhibit function.

Clocking is inhibited when either of the clock inputs are held high,

holding either input low enables the other clock input. This will allow

the system clock to be free running and the register stopped on

command with the other clock input. A change from low-to-high on

the clock inhibit input should only be done when the clock input is

high. A buffered direct clear input overrides all other inputs, including

the clock, and sets all flip-flops to zero.

http://onsemi.com

LOW

POWER

SCHOTTKY

•

Synchronous Load

•

Direct Overriding Clear

•

Parallel to Serial Conversion

GUARANTEED OPERATING RANGES

Symbol

Parameter

Supply Voltage

Operating Ambient

Temperature Range

Output Current – High

Output Current – Low

Min

4.75

Typ

5.0

Max

5.25

– 0.4

8.0

Unit

°C

PLASTIC

N SUFFIX

CASE 648

SOIC

D SUFFIX

CASE 751B

ORDERING INFORMATION

Device

SN74LS166N

SN74LS166D

Package

16 Pin DIP

16 Pin

Shipping

2000 Units/Box

2500/Tape & Reel

Semiconductor Components Industries, LLC, 1999

December, 1999 – Rev. 6

Publication Order Number:

SN74LS166/D

SN74LS166 Related Products

	SN74LS166	SN74LS166N	SN74LS166D
Description	LOW POWER SCHOTTKY	LOW POWER SCHOTTKY	LOW POWER SCHOTTKY
Is it Rohs certified?	-	incompatible	incompatible
Parts packaging code	-	DIP	SOIC
package instruction	-	PLASTIC, DIP-16	SOP, SOP16,.25
Contacts	-	16	16
Reach Compliance Code	-	not_compliant	_compli
Counting direction	-	RIGHT	RIGHT
series	-	LS	LS
JESD-30 code	-	R-PDIP-T16	R-PDSO-G16
JESD-609 code	-	e0	e0
length	-	19.175 mm	9.9 mm
Logic integrated circuit type	-	PARALLEL IN SERIAL OUT	PARALLEL IN SERIAL OUT
Number of digits	-	8	8
Number of functions	-	1	1
Number of terminals	-	16	16
Maximum operating temperature	-	70 °C	70 °C
Output polarity	-	TRUE	TRUE
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	DIP	SOP
Encapsulate equivalent code	-	DIP16,.3	SOP16,.25
Package shape	-	RECTANGULAR	RECTANGULAR
Package form	-	IN-LINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	-	NOT SPECIFIED	NOT SPECIFIED
power supply	-	5 V	5 V
propagation delay (tpd)	-	35 ns	35 ns
Certification status	-	Not Qualified	Not Qualified
Maximum seat height	-	4.44 mm	1.75 mm
Maximum supply voltage (Vsup)	-	5.25 V	5.25 V
Minimum supply voltage (Vsup)	-	4.75 V	4.75 V
Nominal supply voltage (Vsup)	-	5 V	5 V
surface mount	-	NO	YES
technology	-	TTL	TTL
Temperature level	-	COMMERCIAL	COMMERCIAL
Terminal surface	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	-	THROUGH-HOLE	GULL WING
Terminal pitch	-	2.54 mm	1.27 mm
Terminal location	-	DUAL	DUAL
Maximum time at peak reflow temperature	-	NOT SPECIFIED	NOT SPECIFIED
Trigger type	-	POSITIVE EDGE	POSITIVE EDGE
width	-	7.62 mm	3.9 mm
minfmax	-	25 MHz	25 MHz
Base Number Matches	-	1	1

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