Specification	SN74ALS240ADWR

Current - Output High, Low [custom]	15 mA
Current - Output High, Low [custom]	24 mA
Logic Type	Inverting, Buffer
Mounting Type	Surface Mount
Number of Bits per Element	4
Number of Elements	2
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Output Type	3-State
Package / Case	20-SOIC
Package / Case [y]	0.295 in
Package / Case [y]	7.5 mm
Supplier Device Package	20-SOIC
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74ALS240A Series

8-ch, 4.5-V to 5.5-V bipolar inverters with 3-state outputs

Part	Number of Elements	Output Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Operating Temperature [Max]	Logic Type	Number of Bits per Element	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Supplier Device Package	Mounting Type	Package / Case	Package / Case	Package / Case	Package / Case [y]	Package / Case [y]
Texas Instruments SN74ALS240ADB	2	3-State	4.5 V	5.5 V	70 °C	Buffer Inverting	4	15 mA	24 mA	20-SSOP	Surface Mount	20-SSOP
Texas Instruments SN74ALS240ANS	2	3-State	4.5 V	5.5 V	70 °C	Buffer Inverting	4	15 mA	48 mA	20-SO	Surface Mount	20-SOIC	0.209 "	5.3 mm
Texas Instruments SN74ALS240A-1DWR	2	3-State	4.5 V	5.5 V	70 °C	Buffer Inverting	4	15 mA	48 mA	20-SOIC	Surface Mount	20-SOIC			0.295 in	7.5 mm
Texas Instruments SN74ALS240A-1N	2	3-State	4.5 V	5.5 V	70 °C	Buffer Inverting	4	15 mA	48 mA	20-PDIP	Through Hole	20-DIP	0.3 in	7.62 mm
Texas Instruments SN74ALS240ANSR	2	3-State	4.5 V	5.5 V	70 °C	Buffer Inverting	4	15 mA	24 mA	20-SO	Surface Mount	20-SOIC	0.209 "	5.3 mm
Texas Instruments SN74ALS240ADWR	2	3-State	4.5 V	5.5 V	70 °C	Buffer Inverting	4	15 mA	24 mA	20-SOIC	Surface Mount	20-SOIC			0.295 in	7.5 mm
Texas Instruments SN74ALS240A-1DBRG4	2	3-State	4.5 V	5.5 V	70 °C	Buffer Inverting	4	15 mA	48 mA	20-SSOP	Surface Mount	20-SSOP
Texas Instruments SN74ALS240A-1DBR	2	3-State	4.5 V	5.5 V	70 °C	Buffer Inverting	4	15 mA	48 mA	20-SSOP	Surface Mount	20-SSOP

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	$ 1.28
		10	$ 1.14
		25	$ 1.09
		100	$ 0.89
		250	$ 0.83
		500	$ 0.74
		1000	$ 0.58
	Digi-Reel®	1	$ 1.28
		10	$ 1.14
		25	$ 1.09
		100	$ 0.89
		250	$ 0.83
		500	$ 0.74
		1000	$ 0.58
	Tape & Reel (TR)	2000	$ 0.48
Texas Instruments	LARGE T&R	1	$ 1.09
		100	$ 0.84
		250	$ 0.62
		1000	$ 0.44

Description

General part information

SN74ALS240A Series

These octal buffers/drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. When these devices are used with the ’ALS241, ’AS241A, ’ALS244, and ’AS244A devices, the circuit designer has a choice of selected combinations of inverting and noninverting outputs, symmetrical active-low output-enable (OE)\ inputs, and complementary OE and OE\ inputs. These devices feature high fan-out and improved fan-in.

The -1 version of SN74ALS240A is identical to the standard version, except that the recommended maximum IOLfor the -1 version is 48 mA. There is no -1 version of the SN54ALS240A.

Documents

Technical documentation and resources

Octal Buffers/Drivers With 3-State Outputs datasheet (Rev. E)

Data sheet