DM74LS373CW datasheet, PDF - EEWORLD Datasheet

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DM74LS373CW: DescriptionBus Driver, LS Series, 1-Func, 8-Bit, True Output, TTL, WAFER; Categorylogic logic; File Size88KB，8 Pages; ManufacturerFairchild; Websitehttp://www.fairchildsemi.com/

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DM74LS373CW Overview

Bus Driver, LS Series, 1-Func, 8-Bit, True Output, TTL, WAFER

DM74LS373CW Parametric

Parameter Name	Attribute value
Maker	Fairchild
Parts packaging code	WAFER
package instruction	DIE,
Reach Compliance Code	unknown
series	LS
JESD-30 code	X-XUUC-N20
Logic integrated circuit type	BUS DRIVER
Number of digits	8
Number of functions	1
Number of ports	2
Number of terminals	20
Maximum operating temperature	70 °C
Minimum operating temperature
Output characteristics	3-STATE
Output polarity	TRUE
Package body material	UNSPECIFIED
encapsulated code	DIE
Package shape	UNSPECIFIED
Package form	UNCASED CHIP
propagation delay (tpd)	27 ns
Certification status	Not Qualified
Maximum supply voltage (Vsup)	5.25 V
Minimum supply voltage (Vsup)	4.75 V
Nominal supply voltage (Vsup)	5 V
surface mount	YES
technology	TTL
Temperature level	COMMERCIAL
Terminal form	NO LEAD
Terminal location	UPPER

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

April 1986

Revised March 2000

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

IDM29901NC

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

DM74LS373CW Related Products

	DM74LS373CW	DM74LS373WMX	DM74LS373SJX
Description	Bus Driver, LS Series, 1-Func, 8-Bit, True Output, TTL, WAFER	Bus Driver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20, 0.300 INCH, MS-013, SOIC-20	Bus Driver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20, 5.30 MM, EIAJ TYPE2, SOP-20
Maker	Fairchild	Fairchild	Fairchild
Parts packaging code	WAFER	SOIC	SOIC
package instruction	DIE,	SOP, SOP20,.4	SOP, SOP20,.3
Reach Compliance Code	unknown	unknown	unknown
series	LS	LS	-
JESD-30 code	X-XUUC-N20	R-PDSO-G20	-
Logic integrated circuit type	BUS DRIVER	BUS DRIVER	-
Number of digits	8	8	-
Number of functions	1	1	-
Number of ports	2	2	-
Number of terminals	20	20	-
Maximum operating temperature	70 °C	70 °C	-
Output characteristics	3-STATE	3-STATE	-
Output polarity	TRUE	TRUE	-
Package body material	UNSPECIFIED	PLASTIC/EPOXY	-
encapsulated code	DIE	SOP	-
Package shape	UNSPECIFIED	RECTANGULAR	-
Package form	UNCASED CHIP	SMALL OUTLINE	-
propagation delay (tpd)	27 ns	26 ns	-
Certification status	Not Qualified	Not Qualified	-
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	YES	YES	-
technology	TTL	TTL	-
Temperature level	COMMERCIAL	COMMERCIAL	-
Terminal form	NO LEAD	GULL WING	-
Terminal location	UPPER	DUAL	-
Is it Rohs certified?	-	incompatible	incompatible
Contacts	-	20	20

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