SN74ALS374A Series

Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs

Catalog

Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs

Part	Type	Number of Bits per Element	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Trigger Type	Current - Quiescent (Iq)	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Package / Case	Package / Case	Package / Case	Function	Voltage - Supply [Min]	Voltage - Supply [Max]	Number of Elements	Clock Frequency	Max Propagation Delay @ V, Max CL	Supplier Device Package	Package / Case [y]	Package / Case [y]
Texas Instruments SN74ALS374ANSR	D-Type	8	24 mA	2.6 mA	Positive Edge	19 mA	Non-Inverted Tri-State	70 °C	0 °C	Surface Mount	20-SOIC	0.209 "	5.3 mm	Standard	4.5 V	5.5 V	1	35 MHz	16 ns	20-SO
Texas Instruments SN74ALS374AN	D-Type	8	24 mA	2.6 mA	Positive Edge	19 mA	Non-Inverted Tri-State	70 °C	0 °C	Through Hole	20-DIP	0.3 in	7.62 mm	Standard	4.5 V	5.5 V	1	35 MHz	16 ns	20-PDIP
Texas Instruments SN74ALS374AN3
Texas Instruments SN74ALS374ANG4	D-Type	8	24 mA	2.6 mA	Positive Edge	19 mA	Non-Inverted Tri-State	70 °C	0 °C	Through Hole	20-DIP	0.3 in	7.62 mm	Standard	4.5 V	5.5 V	1	35 MHz	16 ns	20-PDIP
Texas Instruments SN74ALS374ADW	D-Type	8	24 mA	2.6 mA	Positive Edge	19 mA	Non-Inverted Tri-State	70 °C	0 °C	Surface Mount	20-SOIC			Standard	4.5 V	5.5 V	1	35 MHz	16 ns	20-SOIC	0.295 in	7.5 mm
Texas Instruments SN74ALS374ADWR	D-Type	8	24 mA	2.6 mA	Positive Edge	19 mA	Non-Inverted Tri-State	70 °C	0 °C	Surface Mount	20-SOIC			Standard	4.5 V	5.5 V	1	35 MHz	16 ns	20-SOIC	0.295 in	7.5 mm

Catalog

Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs

Key Features

• D-Type Flip-Flops in a Single Package With 3-State Bus Driving True OutputsFull Parallel Access for LoadingBuffered Control InputsPackage Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) DIPsD-Type Flip-Flops in a Single Package With 3-State Bus Driving True OutputsFull Parallel Access for LoadingBuffered Control InputsPackage Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) DIPs

Description

These octal D-type edge-triggered flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (D) inputs. A buffered output-enable (OE\) input places the eight outputs in either a normal logic state (high or low logic levels) 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-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. The SN54ALS374A and SN54AS374 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS374A and SN74AS374 are characterized for operation from 0°C to 70°C. These octal D-type edge-triggered flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (D) inputs. A buffered output-enable (OE\) input places the eight outputs in either a normal logic state (high or low logic levels) 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-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. The SN54ALS374A and SN54AS374 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS374A and SN74AS374 are characterized for operation from 0°C to 70°C.