CY74FCT2245T Series

Octal Bus Transceivers with 3-State Outputs and Series Damping Resistors

Catalog

Octal Bus Transceivers with 3-State Outputs and Series Damping Resistors

Part	Number of Elements	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Number of Bits per Element	Package / Case	Package / Case [y]	Package / Case [y]	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Mounting Type	Output Type	Package / Case	Package / Case	Package / Case [x]	Package / Case [custom]	Package / Case [custom]
Texas Instruments CY74FCT2245CTSOCE4	1	15 mA	12 mA	8	20-SOIC	0.295 in	7.5 mm	85 °C	-40 °C	4.75 V	5.25 V	20-SOIC	Surface Mount	3-State
Texas Instruments CY74FCT2245ATPC	1	15 mA	12 mA	8	20-DIP			85 °C	-40 °C	4.75 V	5.25 V	20-PDIP	Through Hole	3-State	7.62 mm	0.3 in
Texas Instruments CY74FCT2245CTSOC	1	15 mA	12 mA	8	20-SOIC	0.295 in	7.5 mm	85 °C	-40 °C	4.75 V	5.25 V	20-SOIC	Surface Mount	3-State
Texas Instruments CY74FCT2245ATSOCT	1	15 mA	12 mA	8	20-SOIC	0.295 in	7.5 mm	85 °C	-40 °C	4.75 V	5.25 V	20-SOIC	Surface Mount	3-State
Texas Instruments CY74FCT2245CTSOCT	1	15 mA	12 mA	8	20-SOIC	0.295 in	7.5 mm	85 °C	-40 °C	4.75 V	5.25 V	20-SOIC	Surface Mount	3-State
Texas Instruments CY74FCT2245ATPWRG4	1	15 mA	12 mA	8	20-TSSOP	4.4 mm		85 °C	-40 °C	4.75 V	5.25 V	20-TSSOP	Surface Mount	3-State			0.173 in
Texas Instruments CY74FCT2245ATQCT	1	15 mA	12 mA	8	20-SSOP			85 °C	-40 °C	4.75 V	5.25 V	20-SSOP	Surface Mount	3-State				0.154 in	3.9 mm
Texas Instruments CY74FCT2245TSOC	1	15 mA	12 mA	8	20-SOIC	0.295 in	7.5 mm	85 °C	-40 °C	4.75 V	5.25 V	20-SOIC	Surface Mount	3-State
Texas Instruments CY74FCT2245TSOCT	1	15 mA	12 mA	8	20-SOIC	0.295 in	7.5 mm	85 °C	-40 °C	4.75 V	5.25 V	20-SOIC	Surface Mount	3-State
Texas Instruments CY74FCT2245TQCT	1	15 mA	12 mA	8	20-SSOP			85 °C	-40 °C	4.75 V	5.25 V	20-SSOP	Surface Mount	3-State				0.154 in	3.9 mm

Catalog

Octal Bus Transceivers with 3-State Outputs and Series Damping Resistors

Key Features

• Function and Pinout Compatible With FCT and F Logic25-Output Series Resistors to Reduce Transmission-Line Reflection NoiseEdge-Rate Control Circuitry for Significantly Improved Noise CharacteristicsIoffSupports Partial-Power-Down Mode OperationFully Compatible With TTL Input and Output Logic LevelsESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)12-mA Output Sink Current15-mA Output Source Current3-State OutputsFunction and Pinout Compatible With FCT and F Logic25-Output Series Resistors to Reduce Transmission-Line Reflection NoiseEdge-Rate Control Circuitry for Significantly Improved Noise CharacteristicsIoffSupports Partial-Power-Down Mode OperationFully Compatible With TTL Input and Output Logic LevelsESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)12-mA Output Sink Current15-mA Output Source Current3-State Outputs

Description

The CY74FCT2245T contains eight noninverting, bidirectional buffers with 3-state outputs intended for bus-oriented applications. On-chip termination resistors at the outputs reduce system noise caused by reflections. For this reason, the CY74FCT2245T can replace the CY74FCT245T in an existing design. The CY74FCT2245T current-sinking capability is 12 mA at the A and B ports. The transmit/receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active high) enables data from A ports to B ports; receive (active low) enables data from B ports to A ports. The output-enable (OE\) input, when high, disables both the A and B ports by putting them in the high-impedance state. This device is 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 CY74FCT2245T contains eight noninverting, bidirectional buffers with 3-state outputs intended for bus-oriented applications. On-chip termination resistors at the outputs reduce system noise caused by reflections. For this reason, the CY74FCT2245T can replace the CY74FCT245T in an existing design. The CY74FCT2245T current-sinking capability is 12 mA at the A and B ports. The transmit/receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active high) enables data from A ports to B ports; receive (active low) enables data from B ports to A ports. The output-enable (OE\) input, when high, disables both the A and B ports by putting them in the high-impedance state. This device is 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.