Specification	SN74AS240ADW

Current - Output High, Low [custom]	64 mA
Current - Output High, Low [custom]	15 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

SN74AS240A Series

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

Part	Logic Type	Number of Bits per Element	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Mounting Type	Number of Elements	Operating Temperature [Max]	Supplier Device Package	Package / Case	Package / Case [y]	Package / Case [y]	Voltage - Supply [Min]	Voltage - Supply [Max]	Output Type	Package / Case	Package / Case
Texas Instruments SN74AS240ADW	Buffer Inverting	4	64 mA	15 mA	Surface Mount	2	70 °C	20-SOIC	20-SOIC	0.295 in	7.5 mm	4.5 V	5.5 V	3-State
Texas Instruments SN74AS240ADWR	Buffer Inverting	4	64 mA	15 mA	Surface Mount	2	70 °C	20-SOIC	20-SOIC	0.295 in	7.5 mm	4.5 V	5.5 V	3-State
Texas Instruments SN74AS240ANSR	Buffer Inverting	4	64 mA	15 mA	Surface Mount	2	70 °C	20-SO	20-SOIC			4.5 V	5.5 V	3-State	0.209 "	5.3 mm
Texas Instruments SN74AS240N	Buffer Inverting	4	64 mA	15 mA	Through Hole	2	70 °C	20-PDIP	20-DIP			4.5 V	5.5 V	3-State	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	Tube	350	$ 2.87
Texas Instruments	TUBE	1	$ 3.57
		100	$ 3.13
		250	$ 2.19
		1000	$ 1.77

Description

General part information

SN74AS240A 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