CY74FCT138T Series

1-of-8 Decoder

Catalog

1-of-8 Decoder

Part	Voltage Supply Source	Operating Temperature [Max]	Operating Temperature [Min]	Type	Independent Circuits	Supplier Device Package	Circuit	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case [x]	Package / Case	Package / Case [y]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Mounting Type	Package / Case	Package / Case
Texas Instruments CY74FCT138CTSOCT	Single Supply	85 °C	-40 °C	Decoder/Demultiplexer	1	16-SOIC	1 x 3:8	4.75 V	5.25 V	0.295 in	16-SOIC	7.5 mm	64 mA	32 mA	Surface Mount
Texas Instruments CY74FCT138CTQCT	Single Supply	85 °C	-40 °C	Decoder/Demultiplexer	1	16-SSOP	1 x 3:8	4.75 V	5.25 V		16-SSOP		64 mA	32 mA	Surface Mount	0.154 in	3.9 mm
Texas Instruments CY74FCT138ATSOC	Single Supply	85 °C	-40 °C	Decoder/Demultiplexer	1	16-SOIC	1 x 3:8	4.75 V	5.25 V	0.295 in	16-SOIC	7.5 mm	64 mA	32 mA	Surface Mount
Texas Instruments CY74FCT138ATSOCG4	Single Supply	85 °C	-40 °C	Decoder/Demultiplexer	1	16-SOIC	1 x 3:8	4.75 V	5.25 V	0.295 in	16-SOIC	7.5 mm	64 mA	32 mA	Surface Mount
Texas Instruments CY74FCT138TQCT	Single Supply	85 °C	-40 °C	Decoder/Demultiplexer	1	16-SSOP	1 x 3:8	4.75 V	5.25 V		16-SSOP		64 mA	32 mA	Surface Mount	0.154 in	3.9 mm
Texas Instruments CY74FCT138ATSOCT	Single Supply	85 °C	-40 °C	Decoder/Demultiplexer	1	16-SOIC	1 x 3:8	4.75 V	5.25 V	0.295 in	16-SOIC	7.5 mm	64 mA	32 mA	Surface Mount

Catalog

1-of-8 Decoder

Key Features

• Function, Pinout, and Drive Compatible With FCT and F LogicReduced VOH(Typically = 3.3 V) Versions of Equivalent FCT FunctionsEdge-Rate Control Circuitry for Significantly Improved Noise CharacteristicsIoffSupports Partial-Power-Down Mode OperationMatched Rise and Fall TimesFully Compatible With TTL Input and Output Logic LevelsDual 1-of-8 Decoder With EnablesESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)CY54FCT138T32-mA Output Sink Current12-mA Output Source CurrentCY74FCT138T64-mA Output Sink Current32-mA Output Source CurrentFunction, Pinout, and Drive Compatible With FCT and F LogicReduced VOH(Typically = 3.3 V) Versions of Equivalent FCT FunctionsEdge-Rate Control Circuitry for Significantly Improved Noise CharacteristicsIoffSupports Partial-Power-Down Mode OperationMatched Rise and Fall TimesFully Compatible With TTL Input and Output Logic LevelsDual 1-of-8 Decoder With EnablesESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)CY54FCT138T32-mA Output Sink Current12-mA Output Source CurrentCY74FCT138T64-mA Output Sink Current32-mA Output Source Current

Description

The \x92FCT138T devices are 1-of-8 decoders. These devices accept three binary weighted inputs (A0, A1, A2) and, when enabled, provide eight mutually exclusive active-low outputs (O\0\x96O\7). The \x92FCT138T devices feature three enable inputs: two active low (E\1, E\2) and one active high (E3). All outputs are high unless E\1and E\2are low and E3is high. This multiple-enable function allows easy parallel expansion of the device to a 1-of-32 (five lines to 32 lines) decoder with just four \x92FCT138T devices and one inverter. These devices are fully specified for partial-power-down applications using Ioff. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The \x92FCT138T devices are 1-of-8 decoders. These devices accept three binary weighted inputs (A0, A1, A2) and, when enabled, provide eight mutually exclusive active-low outputs (O\0\x96O\7). The \x92FCT138T devices feature three enable inputs: two active low (E\1, E\2) and one active high (E3). All outputs are high unless E\1and E\2are low and E3is high. This multiple-enable function allows easy parallel expansion of the device to a 1-of-32 (five lines to 32 lines) decoder with just four \x92FCT138T devices and one inverter. These devices are fully specified for partial-power-down applications using Ioff. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.