SN74AS240A Series

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

Catalog

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

Catalog

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

Key Features

• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registerspnp Inputs Reduce dc Loading3-State Outputs Drive Bus Lines or Buffer Memory Address Registerspnp Inputs Reduce dc Loading

Description

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. 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.