SN74LS257BD datasheet, PDF - EEWORLD Datasheet

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SN74LS257BD: DescriptionLS SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDIP16; Categorylogic logic; File Size71KB，8 Pages; ManufacturerON Semiconductor; Websitehttp://www.onsemi.cn

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SN74LS257BD Overview

LS SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDIP16

SN74LS257BD Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	ON Semiconductor
Parts packaging code	SOIC
package instruction	SOP, SOP16,.25
Contacts	16
Reach Compliance Code	_compli
series	LS
JESD-30 code	R-PDSO-G16
JESD-609 code	e0
length	9.9 mm
Logic integrated circuit type	MULTIPLEXER
MaximumI(ol)	0.024 A
Humidity sensitivity level	1
Number of functions	4
Number of entries	2
Output times	1
Number of terminals	16
Maximum operating temperature	70 °C
Minimum operating temperature
Output characteristics	3-STATE
Output polarity	TRUE
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP16,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
power supply	5 V
Maximum supply current (ICC)	19 mA
Prop。Delay @ Nom-Su	21 ns
propagation delay (tpd)	15 ns
Certification status	Not Qualified
Maximum seat height	1.75 mm
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 surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3.9 mm
Base Number Matches	1

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SN74LS257B SN74LS258B

Quad 2-Input Multiplexer

with 3-State Outputs

The LSTTL / MSI SN74LS257B and the SN74LS258B are Quad

2-Input Multiplexers with 3-state outputs. Four bits of data from two

sources can be selected using a Common Data Select input. The four

outputs present the selected data in true (non-inverted) form. The

outputs may be switched to a high impedance state with a HIGH on the

common Output Enable (E

) Input, allowing the outputs to interface

directly with bus oriented systems. It is fabricated with the Schottky

barrier diode process for high speed and is completely compatible with

all ON Semiconductor TTL families.

http://onsemi.com

LOW

POWER

SCHOTTKY

•

Schottky Process For High Speed

Multiplexer Expansion By Tying Outputs Together

Non-Inverting 3-State Outputs

Input Clamp Diodes Limit High Speed Termination Effects

Special Circuitry Ensures Glitch Free Multiplexing

ESD > 3500 Volts

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

– 2.6

Unit

°C

PLASTIC

N SUFFIX

CASE 648

SOIC

D SUFFIX

CASE 751B

ORDERING INFORMATION

Device

SN74LS257BN

SN74LS257BD

SN74LS258BN

SN74LS258BD

Package

16 Pin DIP

16 Pin

16 Pin DIP

16 Pin

Shipping

2000 Units/Box

2500/Tape & Reel

2000 Units/Box

2500/Tape & Reel

Semiconductor Components Industries, LLC, 1999

December, 1999 – Rev. 6

Publication Order Number:

SN74LS257B/D

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series	LS	LS	LS	LS	LS	LS	LS
Number of functions	4	4	4	4	4	4	4
Number of terminals	16	16	16	16	16	16	16
Maximum operating temperature	70 °C	70 Cel	70 Cel	70 °C	70 °C	70 °C	70 Cel
Output characteristics	3-STATE	3-ST	3-ST	3-STATE	3-STATE	3-STATE	3-ST
Output polarity	TRUE	TRUE	TRUE	INVERTED	INVERTED	TRUE	TRUE
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal form	GULL WING	THROUGH-hole	THROUGH-hole	THROUGH-HOLE	GULL WING	THROUGH-HOLE	THROUGH-hole
Terminal location	DUAL	pair	pair	DUAL	DUAL	DUAL	pair
Is it Rohs certified?	incompatible	-	-	incompatible	incompatible	incompatible	-
Maker	ON Semiconductor	-	-	ON Semiconductor	ON Semiconductor	ON Semiconductor	-
Parts packaging code	SOIC	-	-	DIP	SOIC	DIP	-
package instruction	SOP, SOP16,.25	-	-	PLASTIC, DIP-16	PLASTIC, SOIC-16	DIP, DIP16,.3	-
Contacts	16	-	-	16	16	16	-
Reach Compliance Code	_compli	-	-	not_compliant	not_compliant	_compli	-
JESD-30 code	R-PDSO-G16	-	-	R-PDIP-T16	R-PDSO-G16	R-PDIP-T16	-
JESD-609 code	e0	-	-	e0	e0	e0	-
length	9.9 mm	-	-	19.175 mm	9.9 mm	19.175 mm	-
Logic integrated circuit type	MULTIPLEXER	-	-	MULTIPLEXER	MULTIPLEXER	MULTIPLEXER	-
MaximumI(ol)	0.024 A	-	-	0.024 A	0.024 A	0.024 A	-
Number of entries	2	-	-	2	2	2	-
Output times	1	-	-	1	1	1	-
Package body material	PLASTIC/EPOXY	-	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-
encapsulated code	SOP	-	-	DIP	SOP	DIP	-
Encapsulate equivalent code	SOP16,.25	-	-	DIP16,.3	SOP16,.25	DIP16,.3	-
Package shape	RECTANGULAR	-	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	-
Package form	SMALL OUTLINE	-	-	IN-LINE	SMALL OUTLINE	IN-LINE	-
Peak Reflow Temperature (Celsius)	NOT SPECIFIED	-	-	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	-
power supply	5 V	-	-	5 V	5 V	5 V	-
Maximum supply current (ICC)	19 mA	-	-	19 mA	19 mA	19 mA	-
propagation delay (tpd)	15 ns	-	-	15 ns	15 ns	15 ns	-
Certification status	Not Qualified	-	-	Not Qualified	Not Qualified	Not Qualified	-
Maximum seat height	1.75 mm	-	-	4.44 mm	1.75 mm	4.44 mm	-
Maximum supply voltage (Vsup)	5.25 V	-	-	5.25 V	5.25 V	5.25 V	-
Minimum supply voltage (Vsup)	4.75 V	-	-	4.75 V	4.75 V	4.75 V	-
Nominal supply voltage (Vsup)	5 V	-	-	5 V	5 V	5 V	-
surface mount	YES	-	-	NO	YES	NO	-
technology	TTL	-	-	TTL	TTL	TTL	-
Terminal surface	Tin/Lead (Sn/Pb)	-	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	-
Terminal pitch	1.27 mm	-	-	2.54 mm	1.27 mm	2.54 mm	-
Maximum time at peak reflow temperature	NOT SPECIFIED	-	-	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	-
width	3.9 mm	-	-	7.62 mm	3.9 mm	7.62 mm	-
Base Number Matches	1	-	-	1	1	1	-

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