Datasheet Texas Instruments SN74LS257B — Datenblatt

HerstellerTexas Instruments
SerieSN74LS257B
Datasheet Texas Instruments SN74LS257B

Vierfache 2-Zeilen- bis 1-Zeilen-Datenauswahl / Multiplexer mit 3-Zustands-Ausgängen

Datenblätter

Quadruple 2-Line To 1-Line Data Selectors/Multiplexers datasheet
PDF, 989 Kb, Datei veröffentlicht: Mar 1, 1988
Auszug aus dem Dokument

Preise

Status

SN74LS257BDSN74LS257BDE4SN74LS257BDG4SN74LS257BDRSN74LS257BNSN74LS257BN3SN74LS257BNE4SN74LS257BNSR
Lifecycle StatusActive (Recommended for new designs)Active (Recommended for new designs)Active (Recommended for new designs)Active (Recommended for new designs)Active (Recommended for new designs)Obsolete (Manufacturer has discontinued the production of the device)Active (Recommended for new designs)Active (Recommended for new designs)
Manufacture's Sample AvailabilityNoNoNoNoNoNoNoNo

Verpackung

SN74LS257BDSN74LS257BDE4SN74LS257BDG4SN74LS257BDRSN74LS257BNSN74LS257BN3SN74LS257BNE4SN74LS257BNSR
N12345678
Pin1616161616161616
Package TypeDDDDNNNNS
Industry STD TermSOICSOICSOICSOICPDIPPDIPPDIPSOP
JEDEC CodeR-PDSO-GR-PDSO-GR-PDSO-GR-PDSO-GR-PDIP-TR-PDIP-TR-PDIP-TR-PDSO-G
Package QTY404040250025252000
CarrierTUBETUBETUBELARGE T&RTUBETUBELARGE T&R
Device MarkingLS257BLS257BLS257BLS257BSN74LS257BNSN74LS257BN74LS257B
Width (mm)3.913.913.913.916.356.356.355.3
Length (mm)9.99.99.99.919.319.319.310.3
Thickness (mm)1.581.581.581.583.93.93.91.95
Pitch (mm)1.271.271.271.272.542.542.541.27
Max Height (mm)1.751.751.751.755.085.085.082
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Parameter

Parameters / ModelsSN74LS257BD
SN74LS257BD
SN74LS257BDE4
SN74LS257BDE4
SN74LS257BDG4
SN74LS257BDG4
SN74LS257BDR
SN74LS257BDR
SN74LS257BN
SN74LS257BN
SN74LS257BN3
SN74LS257BN3
SN74LS257BNE4
SN74LS257BNE4
SN74LS257BNSR
SN74LS257BNSR
Approx. Price (US$)0.28 | 1ku
Bandwidth, MHz35353535353535
Bits2222222
Bits(#)2
Number of Channels4444444
Channels(#)4
Configuration2:12:12:12:12:12:12:12:1
Digital input leakage(Max), uA5555555
ESD Charged Device Model, kV0.750.750.750.750.750.750.75
ESD HBM, kV2222222
F @ Nom Voltage(Max), Mhz35353535353535
F @ Nom Voltage(Max)(Mhz)35
FunctionEncoder/MultiplexerEncoder/MultiplexerEncoder/MultiplexerEncoder/MultiplexerEncoder/MultiplexerEncoder/MultiplexerEncoder/MultiplexerEncoder/Multiplexer
ICC @ Nom Voltage(Max), mA19191919191919
ICC @ Nom Voltage(Max)(mA)19
Input TypeTTL
Operating Temperature Range, C0 to 700 to 700 to 700 to 700 to 700 to 700 to 70
Operating Temperature Range(C)0 to 70
Output Drive (IOL/IOH)(Max), mA24/-2.624/-2.624/-2.624/-2.624/-2.624/-2.624/-2.6
Output Drive (IOL/IOH)(Max)(mA)24/-2.6
Output TypeTTL
Package GroupSOICSOICSOICSOICPDIPPDIPPDIPSO
Package Size: mm2:W x L, PKG16SOIC: 59 mm2: 6 x 9.9(SOIC)16SOIC: 59 mm2: 6 x 9.9(SOIC)16SOIC: 59 mm2: 6 x 9.9(SOIC)16SOIC: 59 mm2: 6 x 9.9(SOIC)See datasheet (PDIP)See datasheet (PDIP)16SO: 80 mm2: 7.8 x 10.2(SO)
Package Size: mm2:W x L (PKG)See datasheet (PDIP)
RatingCatalogCatalogCatalogCatalogCatalogCatalogCatalogCatalog
Schmitt TriggerNoNoNoNoNoNoNoNo
Technology FamilyLSLSLSLSLSLSLSLS
Type3-State Output3-State Output3-State Output3-State Output3-State Output3-State Output3-State Output3-State Output
VCC(Max), V5.255.255.255.255.255.255.25
VCC(Max)(V)5.25
VCC(Min), V4.754.754.754.754.754.754.75
VCC(Min)(V)4.75
Voltage(Nom), V5555555
Voltage(Nom)(V)5
tpd @ Nom Voltage(Max), ns21212121212121
tpd @ Nom Voltage(Max)(ns)21

Öko-Plan

SN74LS257BDSN74LS257BDE4SN74LS257BDG4SN74LS257BDRSN74LS257BNSN74LS257BN3SN74LS257BNE4SN74LS257BNSR
RoHSCompliantCompliantCompliantCompliantCompliantNot CompliantCompliantCompliant
Pb FreeYesNoYes

Anwendungshinweise

  • Designing with the SN54/74LS123 (Rev. A)
    PDF, 118 Kb, Revision: A, Datei veröffentlicht: Mar 1, 1997
    The Texas Instruments (TI) SN54/74LS123 dual retriggerable monostable multivibrator is a one-shot device capable of verylong output pulses and up to 100% duty cycle. The ?LS123 also features dc triggering from gated low-level active A andhigh-level active B inputs and provides a clear input that terminates the output pulse of any predetermined time independentof timing components R ext and

Modellreihe

Herstellerklassifikation

  • Semiconductors> Switches and Multiplexers> Buffered Encoders and Decoders