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SN74LS279A

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Quad /S-/R latches

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Data sheet

SN74LS279A

ACTIVE
Data sheet Order now

Product details

Function RS latch Number of channels 4 Technology family LS Input type Bipolar Output type Push-Pull Data rate (max) (Mbps) 70 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Features Very high speed (tpd 5-10ns) Operating temperature range (°C) 0 to 70 Rating Catalog
Function RS latch Number of channels 4 Technology family LS Input type Bipolar Output type Push-Pull Data rate (max) (Mbps) 70 IOL (max) (mA) 8 IOH (max) (mA) -0.4 Features Very high speed (tpd 5-10ns) Operating temperature range (°C) 0 to 70 Rating Catalog
SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm) SOP (NS) 16 79.56 mm² (10.2 mm × 7.8 mm) PDIP (N) 16 181.42 mm² (19.3 mm × 9.4 mm)
  • Package Options Include Plastic "Small Outline" Packages, Ceramic Chip Carriers and Flat Packages, and Plastic and Ceramic DIPs
  • Dependable Texas Instruments Quality and Reliability
  • Package Options Include Plastic "Small Outline" Packages, Ceramic Chip Carriers and Flat Packages, and Plastic and Ceramic DIPs
  • Dependable Texas Instruments Quality and Reliability

The ’279 offers 4 basic S\-R\ flip-flop latches in one 16-pin, 300-mil package. Under conventional operation, the S\-R\ inputs are normally held high. When the S\ input is pulsed low, the Q output will be set high. When R\ is pulsed low, the Q output will be reset low. Normally, the S\-R\ inputs should not be taken low simultaneously. The Q output will be unpredictable in this condition.

The ’279 offers 4 basic S\-R\ flip-flop latches in one 16-pin, 300-mil package. Under conventional operation, the S\-R\ inputs are normally held high. When the S\ input is pulsed low, the Q output will be set high. When R\ is pulsed low, the Q output will be reset low. Normally, the S\-R\ inputs should not be taken low simultaneously. The Q output will be unpredictable in this condition.
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* Data sheet Quadruple S-R Latches datasheet Mar 1, 1988

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