Specification	SN74ALS540-1NSR

Current - Output High, Low [custom]	15 mA
Current - Output High, Low [custom]	48 mA
Logic Type	Inverting, Buffer
Mounting Type	Surface Mount
Number of Bits per Element	8
Number of Elements	1
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Type	3-State
Package / Case	20-SOIC
Package / Case	0.209 "
Package / Case	5.3 mm
Supplier Device Package	20-SO
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74ALS540-1 Series

8-ch, 4.75-V to 5.25-V bipolar inverters with 3-state outputs

Part	Operating Temperature [Max]	Voltage - Supply [Min]	Voltage - Supply [Max]	Logic Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Output Type	Number of Bits per Element	Mounting Type	Supplier Device Package	Number of Elements	Package / Case	Package / Case [y]	Package / Case [y]	Package / Case	Package / Case
Texas Instruments SN74ALS540-1DW	70 °C	4.5 V	5.5 V	Buffer Inverting	15 mA	48 mA	3-State	8	Surface Mount	20-SOIC	1	20-SOIC	0.295 in	7.5 mm
Texas Instruments SN74ALS540-1NSR	70 °C	4.5 V	5.5 V	Buffer Inverting	15 mA	48 mA	3-State	8	Surface Mount	20-SO	1	20-SOIC			0.209 "	5.3 mm
Texas Instruments SN74ALS540N	70 °C	4.5 V	5.5 V	Buffer Inverting	15 mA	24 mA	3-State	8	Through Hole	20-PDIP	1	20-DIP			0.3 in	7.62 mm
Texas Instruments SN74ALS540N3	70 °C	4.5 V	5.5 V	Buffer Inverting	15 mA	24 mA	3-State	8	Through Hole	20-PDIP	1	20-DIP			0.3 in	7.62 mm
Texas Instruments SN74ALS540NSR	70 °C	4.5 V	5.5 V	Buffer Inverting	15 mA	24 mA	3-State	8	Surface Mount	20-SO	1	20-SOIC			0.209 "	5.3 mm
Texas Instruments SN74ALS540NE4	70 °C	4.5 V	5.5 V	Buffer Inverting	15 mA	24 mA		8	Through Hole	20-PDIP	1	20-DIP			0.3 in	7.62 mm
Texas Instruments SN74ALS540-1N	70 °C	4.5 V	5.5 V	Buffer Inverting	15 mA	48 mA	3-State	8	Through Hole	20-PDIP	1	20-DIP			0.3 in	7.62 mm

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 3.68
		10	$ 3.30
		25	$ 3.12
		100	$ 2.71
		250	$ 2.57
		500	$ 2.30
		1000	$ 1.94
	Digi-Reel®	1	$ 3.68
		10	$ 3.30
		25	$ 3.12
		100	$ 2.71
		250	$ 2.57
		500	$ 2.30
		1000	$ 1.94
	Tape & Reel (TR)	2000	$ 1.85
Texas Instruments	LARGE T&R	1	$ 3.19
		100	$ 2.80
		250	$ 1.96
		1000	$ 1.58

Description

General part information

SN74ALS540-1 Series

These octal buffers and line drivers are designed to have the performance of the popular SN54ALS240A/ SN74ALS240A series and, at the same time, offer a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly facilitates printed circuit board layout.

The 3-state control gate is a 2-input NOR gate such that, if either output-enable (OE1\ or OE2\) input is high, all eight outputs are in the high-impedance state.

The SN74ALS540 provides inverted data. The ’ALS541 provide true data at the outputs.

Documents

Technical documentation and resources

Octal Buffers And Line Drivers With 3-State Outputs datasheet (Rev. D)

Data sheet