DM74LS374N datasheet, PDF - EEWORLD Datasheet

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DM74LS374N: DescriptionIC FF D-TYPE SNGL 8BIT 20DIP; Categorysemiconductor logic; File Size83KB，8 Pages; ManufacturerON Semiconductor; Websitehttp://www.onsemi.cn

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DM74LS374N Overview

IC FF D-TYPE SNGL 8BIT 20DIP

DM74LS374N Parametric

Parameter Name	Attribute value
Function	standard
type	D type
Output type	Three-state, non-inverting
Number of components	1
bits per component	8
Clock frequency	20MHz
Trigger type	positive edge
Current - output high, low	2.6mA，24mA
Voltage - Power	4.75 V ~ 5.25 V
Operating temperature	0°C ~ 70°C（TA）
Installation type	Through hole
Package/casing	20-DIP（0.300"，7.62mm）

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DM74LS373 • DM74LS374 3-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops

April 1986

Revised November 2001

DM74LS373 • DM74LS374

3-STATE Octal D-Type Transparent Latches

and Edge-Triggered Flip-Flops

General Description

These 8-bit registers feature totem-pole 3-STATE outputs

designed specifically for driving highly-capacitive or rela-

tively low-impedance loads. The high-impedance state and

increased high-logic level drive provide these registers with

the capability of being connected directly to and driving the

bus lines in a bus-organized system without need for inter-

face or pull-up components. They are particularly attractive

for implementing buffer registers, I/O ports, bidirectional

bus drivers, and working registers.

The eight latches of the DM74LS373 are transparent D-

type latches meaning that while the enable (G) is HIGH the

Q outputs will follow the data (D) inputs. When the enable

is taken LOW the output will be latched at the level of the

data that was set up.

The eight flip-flops of the DM74LS374 are edge-triggered

D-type flip flops. On the positive transition of the clock, the

Q outputs will be set to the logic states that were set up at

the D inputs.

A buffered output control input can be used to place the

eight outputs in either a normal logic state (HIGH or LOW

logic levels) or a high-impedance state. In the high-imped-

ance state the outputs neither load nor drive the bus lines

significantly.

The output control does not affect the internal operation of

the latches or flip-flops. That is, the old data can be

retained or new data can be entered even while the outputs

are OFF.

Features

Choice of 8 latches or 8 D-type flip-flops in a single

package

3-STATE bus-driving outputs

Full parallel-access for loading

Buffered control inputs

P-N-P inputs reduce D-C loading on data lines

Ordering Code:

Order Number

DM74LS373WM

DM74LS373SJ

DM74LS373N

DM74LS374WM

DM74LS374SJ

DM74LS374N

Package Number

M20B

M20D

N20A

M20B

M20D

N20A

Package Description

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

DS006431

www.fairchildsemi.com

DM74LS374N Related Products

	DM74LS374N	DM74LS373N	DM74LS373WM	DM74LS374WM
Description	IC FF D-TYPE SNGL 8BIT 20DIP	IC LATCH OCTAL D 3ST 20-DIP	IC LATCH OCTAL D 3ST 20-SOIC	IC FF D-TYPE SNGL 8BIT 20SOIC
Output type	Three-state, non-inverting	Three states	Three states	Three-state, non-inverting
Current - output high, low	2.6mA，24mA	2.6mA，24mA	2.6mA，24mA	2.6mA，24mA
Voltage - Power	4.75 V ~ 5.25 V	4.75 V ~ 5.25 V	4.75 V ~ 5.25 V	4.75 V ~ 5.25 V
Operating temperature	0°C ~ 70°C（TA）	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C（TA）
Installation type	Through hole	Through hole	surface mount	surface mount
Package/casing	20-DIP（0.300"，7.62mm）	20-DIP（0.300"，7.62mm）	20-SOIC (0.295", 7.50mm wide)	20-SOIC (0.295", 7.50mm wide)

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