Details, datasheet, quote on part number: I74F138D
PartI74F138D
Category
Description1-of-8 Decoder/demultiplexer
CompanyPhilips Semiconductors (Acquired by NXP)
DatasheetDownload I74F138D datasheet
Cross ref.Similar parts: SN74F138D, 74AC11138, CD4028B, CD4511B, CD4543B, CD4555B, CD4556B, CD74AC138, CD74AC139, CD74AC238
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Features, Applications

FEATURE

Demultiplexing capability Multiple input enable for easy expansion Ideal for memory chip select decoding Industrial temperature range available to +85C)

DESCRIPTION

The 74F138 decoder accepts three binary weighted inputs A1, A2) and when enabled, provides eight mutually exclusive, active low outputs Q7). The device features three enable inputs; two active low (E0, E1) and one active high (E2). Every output will be high unless E0 and E1 are low and E2 is high. This multiple enable function allows easy parallel expansion of the device 1-of-32 (5 lines to 32 lines) decoder with just four 74F138s and one inverter (see Figure 1). The device can be used as an eight output demultiplexer by using one of the active low enable inputs as the data input and the remaining enable inputs as strobes. Enable inputs not used must be permanently tied to their appropriate active high or active low state.

ORDER CODE DESCRIPTION 16-pin plastic DIP 16-pin plastic SO COMMERCIAL RANGE VCC 5V 10%, Tamb N74F138N N74F138D INDUSTRIAL RANGE VCC 5V 10%, Tamb I74F138N I74F138D PKG DWG SOT38-4 SOT109-1

PINS Q7 Address inputs Enable inputs (active Low) Enable input (active High) Data outputs DESCRIPTION 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW 20A/0.6mA 1.0mA/20mA

NOTE: One (1.0) FAST unit load is defined as: 20A in the High state and 0.6mA in the Low state.
NOTES: H = High voltage level L = Low voltage level X = Don't care
APPLICATION

 

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