SN74LS74A Series

Dual D-type pos.-edge-triggered flip-flops with preset and clear

Catalog

Dual D-type pos.-edge-triggered flip-flops with preset and clear

Part	Package / Case [x]	Package / Case	Package / Case [y]	Trigger Type	Output Type	Function	Supplier Device Package	Clock Frequency	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Number of Elements	Mounting Type	Number of Bits per Element	Operating Temperature [Max]	Voltage - Supply [Min]	Voltage - Supply [Max]	Type	Current - Quiescent (Iq)	Max Propagation Delay @ V, Max CL	Package / Case	Package / Case
Texas Instruments SN74LS74ANSR	0.209 "	14-SOIC	5.3 mm	Positive Edge	Complementary	Reset Set(Preset)	14-SO	33 MHz	400 µA	8 mA	2	Surface Mount	1	70 °C	4.75 V	5.25 V	D-Type	8 mA	40 ns
Texas Instruments SN74LS74ANSRG4	0.209 "	14-SOIC	5.3 mm	Positive Edge	Complementary	Reset Set(Preset)	14-SO	33 MHz	400 µA	8 mA	2	Surface Mount	1	70 °C	4.75 V	5.25 V	D-Type	8 mA	40 ns
Texas Instruments SN74LS74ADBR		14-SSOP		Positive Edge	Complementary	Reset Set(Preset)	14-SSOP	33 MHz	400 µA	8 mA	2	Surface Mount	1	70 °C	4.75 V	5.25 V	D-Type	8 mA	40 ns	5.3 mm	0.209 "
Texas Instruments SN74LS74ADG4	0.154 in	14-SOIC	3.9 mm	Positive Edge	Complementary	Reset Set(Preset)		33 MHz	400 µA	8 mA	2	Surface Mount	1	70 °C	4.75 V	5.25 V	D-Type	8 mA	40 ns
Texas Instruments SN74LS74ADRG4	0.154 in	14-SOIC	3.9 mm	Positive Edge	Complementary	Reset Set(Preset)		33 MHz	400 µA	8 mA	2	Surface Mount	1	70 °C	4.75 V	5.25 V	D-Type	8 mA	40 ns
Texas Instruments SN74LS74AD	0.154 in	14-SOIC	3.9 mm	Positive Edge	Complementary	Reset Set(Preset)		33 MHz	400 µA	8 mA	2	Surface Mount	1	70 °C	4.75 V	5.25 V	D-Type	8 mA	40 ns
Texas Instruments SN74LS74AN	0.3 "	14-DIP	7.62 mm	Positive Edge	Complementary	Reset Set(Preset)		33 MHz	400 µA	8 mA	2	Through Hole	1	70 °C	4.75 V	5.25 V	D-Type	8 mA	25 ns

Catalog

Dual D-type pos.-edge-triggered flip-flops with preset and clear

Key Features

• Package Options Include Plastic "Small Outline" Packages, Ceramic Chip Carriers and Flat Packages, and Plastic and Ceramic DIPsDependable Texas Instruments Quality and ReliabilityPackage Options Include Plastic "Small Outline" Packages, Ceramic Chip Carriers and Flat Packages, and Plastic and Ceramic DIPsDependable Texas Instruments Quality and Reliability

Description

These devices contain two independent D-type positive-edge-triggered flip-flops. A low level at the preset or clear inputs sets or resets the outputs regardless of the levels of the other inputs. When preset and clear are inactive (high), data at the D input meeting the setup time requirements are transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold time interval, data at the D input may be changed without affecting the levels at the outputs. The SN54' family is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74' family is characterized for operation from 0°C to 70°C. These devices contain two independent D-type positive-edge-triggered flip-flops. A low level at the preset or clear inputs sets or resets the outputs regardless of the levels of the other inputs. When preset and clear are inactive (high), data at the D input meeting the setup time requirements are transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold time interval, data at the D input may be changed without affecting the levels at the outputs. The SN54' family is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74' family is characterized for operation from 0°C to 70°C.