Specification	SNJ54LS273FK

Clock Frequency	40 MHz
Current - Output High, Low [custom]	4 mA
Current - Output High, Low [custom]	400 µA
Current - Quiescent (Iq)	27 mA
Max Propagation Delay @ V, Max CL	27 ns
Mounting Type	Surface Mount
Number of Bits per Element	8
Number of Elements	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-55 °C
Output Type	Non-Inverted
Package / Case	20-CLCC
Supplier Device Package	20-LCCC (8.89x8.89)
Trigger Type	Positive Edge
Type	D-Type
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN54LS273 Series

Octal D-type Flip-Flop With Clear

Part	Package / Case	Number of Elements	Current - Quiescent (Iq)	Type	Trigger Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Number of Bits per Element	Mounting Type	Max Propagation Delay @ V, Max CL	Clock Frequency	Output Type
Texas Instruments 7801001RA	20-CDIP	1	27 mA	D-Type	Positive Edge	4.5 V	5.5 V	20-CDIP	125 °C	-55 °C	4 mA	400 µA	8	Through Hole	27 ns	40 MHz	Non-Inverted
Texas Instruments SNJ54LS273J	20-CDIP	1	27 mA	D-Type	Positive Edge	4.5 V	5.5 V	20-CDIP	125 °C	-55 °C	4 mA	400 µA	8	Through Hole	27 ns	40 MHz	Non-Inverted
Texas Instruments M38510/32501B2A	20-CLCC	1	27 mA	D-Type	Positive Edge	4.5 V	5.5 V	20-LCCC (8.89x8.89)	125 °C	-55 °C	4 mA	400 µA	8	Surface Mount	27 ns	40 MHz	Non-Inverted
Texas Instruments 78010012A
Texas Instruments SNJ54LS273W	20-CFlatPack	1	27 mA	D-Type	Positive Edge	4.5 V	5.5 V	20-CFP	125 °C	-55 °C	4 mA	400 µA	8	Surface Mount	27 ns	40 MHz	Non-Inverted
Texas Instruments SN54LS273J	20-CDIP	1	27 mA	D-Type	Positive Edge	4.5 V	5.5 V	20-CDIP	125 °C	-55 °C	4 mA	400 µA	8	Through Hole	27 ns	40 MHz	Non-Inverted
Texas Instruments SNJ54LS273FK	20-CLCC	1	27 mA	D-Type	Positive Edge	4.5 V	5.5 V	20-LCCC (8.89x8.89)	125 °C	-55 °C	4 mA	400 µA	8	Surface Mount	27 ns	40 MHz	Non-Inverted

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Texas Instruments	TUBE	1	$ 41.55
		100	$ 36.29
		250	$ 27.98
		1000	$ 25.03

Description

General part information

SN54LS273 Series

These monolithic, positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic with a direct clear input.

Information at the D inputs meeting the setup time requirements is transferred to the Q outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive-going pulse. When the clock input is at either the high or low level, the D input signal has no effect at the output.

These flip-flops are guaranteed to respond to clock frequencies ranging form 0 to 30 megahertz while maximum clock frequency is typically 40 megahertz. Typical power dissipation is 39 milliwatts per flip-flop for the ´273 and 10 milliwatts for the ´LS273.

Documents

Technical documentation and resources

Datasheet

SNJ54LS273FK

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SNJ54LS273FK

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Technical Specifications

SN54LS273 Series

Pricing

Description

SN54LS273 Series

Documents

Datasheet

Designing with the SN54/74LS123 (Rev. A)

Designing With Logic (Rev. C)

LOGIC Pocket Data Book (Rev. B)

Power-Up Behavior of Clocked Devices (Rev. B)

TI IBIS File Creation, Validation, and Distribution Processes

Input and Output Characteristics of Digital Integrated Circuits

Semiconductor Packing Material Electrostatic Discharge (ESD) Protection

Live Insertion

Understanding and Interpreting Standard-Logic Data Sheets (Rev. C)

Logic Guide (Rev. AB)

SN54LS273 Series