CY74FCT374T Series

BiCMOS FCT Interface Logic Octal D-Type Flip-Flops with 3-State Outputs

Catalog

BiCMOS FCT Interface Logic Octal D-Type Flip-Flops with 3-State Outputs

Part	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Max Propagation Delay @ V, Max CL	Current - Quiescent (Iq)	Number of Elements	Package / Case	Package / Case [y]	Package / Case [y]	Supplier Device Package	Trigger Type	Mounting Type	Type	Output Type	Number of Bits per Element	Clock Frequency	Function	Voltage - Supply [Min]	Voltage - Supply [Max]	Input Capacitance	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case [custom]	Package / Case [custom]	Package / Case	Package / Case
Texas Instruments CY74FCT374CTSOCTG4	64 mA	32 mA	5.2 ns	200 µA	1	20-SOIC	0.295 in	7.5 mm	20-SOIC	Positive Edge	Surface Mount	D-Type	Non-Inverted Tri-State	8	250 MHz	Standard	4.75 V	5.25 V	5 pF	85 °C	-40 °C
Texas Instruments CY74FCT374ATSOC	64 mA	32 mA	6.5 ns	200 µA	1	20-SOIC	0.295 in	7.5 mm	20-SOIC	Positive Edge	Surface Mount	D-Type	Non-Inverted Tri-State	8		Standard	4.75 V	5.25 V	5 pF	85 °C	-40 °C
Texas Instruments CY74FCT374CTQC
Texas Instruments CY74FCT374TSOCT	64 mA	32 mA	10 ns	200 µA	1	20-SOIC	0.295 in	7.5 mm	20-SOIC	Positive Edge	Surface Mount	D-Type	Non-Inverted Tri-State	8	250 MHz	Standard	4.75 V	5.25 V	5 pF	85 °C	-40 °C
Texas Instruments CD74FCT374M96	48 mA	15 mA	6.6 ns	8 ÁA	1	20-SOIC	0.295 in	7.5 mm	20-SOIC	Positive Edge	Surface Mount	D-Type	Non-Inverted Tri-State	8	70 MHz	Standard	4.75 V	5.25 V	10 pF	70 °C	0 °C
Texas Instruments CY74FCT374ATQCT	64 mA	32 mA	6.2 ns	200 µA	1	20-SSOP			20-SSOP	Positive Edge	Surface Mount	D-Type	Non-Inverted Tri-State	8		Standard	4.75 V	5.25 V	5 pF	85 °C	-40 °C	0.154 in	3.9 mm
Texas Instruments CY74FCT374CTSOCTE4	64 mA	32 mA	5.2 ns	200 µA	1	20-SOIC	0.295 in	7.5 mm	20-SOIC	Positive Edge	Surface Mount	D-Type	Non-Inverted Tri-State	8	250 MHz	Standard	4.75 V	5.25 V	5 pF	85 °C	-40 °C
Texas Instruments CY74FCT374ATPC	64 mA	32 mA	6.5 ns	200 µA	1	20-DIP			20-PDIP	Positive Edge	Through Hole	D-Type	Non-Inverted Tri-State	8		Standard	4.75 V	5.25 V	5 pF	85 °C	-40 °C			7.62 mm	0.3 in
Texas Instruments CY74FCT374TQCT	64 mA	32 mA	10 ns	200 µA	1	20-SSOP			20-SSOP	Positive Edge	Surface Mount	D-Type	Non-Inverted Tri-State	8		Standard	4.75 V	5.25 V	5 pF	85 °C	-40 °C	0.154 in	3.9 mm
Texas Instruments CD74FCT374M	48 mA	15 mA	6.6 ns	8 ÁA	1	20-SOIC	0.295 in	7.5 mm	20-SOIC	Positive Edge	Surface Mount	D-Type	Non-Inverted Tri-State	8	70 MHz	Standard	4.75 V	5.25 V	10 pF	70 °C	0 °C

Catalog

BiCMOS FCT Interface Logic Octal D-Type Flip-Flops with 3-State Outputs

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 LevelsESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)Edge-Triggered D-Type Inputs250-MHz Typical Switching RateCY54FCT374T32-mA Output Sink Current12-mA Output Source CurrentCY74FCT374T64-mA Output Sink Current32-mA Output Source Current3-State OutputsFunction, 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 LevelsESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)Edge-Triggered D-Type Inputs250-MHz Typical Switching RateCY54FCT374T32-mA Output Sink Current12-mA Output Source CurrentCY74FCT374T64-mA Output Sink Current32-mA Output Source Current3-State Outputs

Description

The CD74FCT374 is an octal, edge-triggered, D-type flip-flop that uses a small-geometry BiCMOS technology and features 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. This device is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The output stage is a combination of bipolar and CMOS transistors that limits the output high level to two diode drops below VCC. This resultant lowering of output swing (0 V to 3.7 V) reduces power-bus ringing [a source of electromagnetic interference (EMI)] and minimizes VCCbounce and ground bounce and their effects during simultaneous output switching. The output configuration also enhances switching speed and is capable of sinking 48 mA. The eight flip-flops enter data into their registers on the low-to-high transition of the clock (CLK). The output-enable (OE\) input controls the 3-state outputs and is independent of the register operation. When OE\ is high, the outputs are in the high-impedance state. A buffered OE\ input can be used to place the eight outputs in either a normal logic state (high or low) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without interface or pullup components. OE\ does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE\ should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The CD74FCT374 is characterized for operation from 0°C to 70°C. The CD74FCT374 is an octal, edge-triggered, D-type flip-flop that uses a small-geometry BiCMOS technology and features 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. This device is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The output stage is a combination of bipolar and CMOS transistors that limits the output high level to two diode drops below VCC. This resultant lowering of output swing (0 V to 3.7 V) reduces power-bus ringing [a source of electromagnetic interference (EMI)] and minimizes VCCbounce and ground bounce and their effects during simultaneous output switching. The output configuration also enhances switching speed and is capable of sinking 48 mA. The eight flip-flops enter data into their registers on the low-to-high transition of the clock (CLK). The output-enable (OE\) input controls the 3-state outputs and is independent of the register operation. When OE\ is high, the outputs are in the high-impedance state. A buffered OE\ input can be used to place the eight outputs in either a normal logic state (high or low) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without interface or pullup components. OE\ does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE\ should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The CD74FCT374 is characterized for operation from 0°C to 70°C.