SN74F240 Octal buffers and line drivers |

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Octal buffers and line drivers

Octal buffers and line drivers - SN74F240


These octal buffers and line 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. Taken together with the ´F241 and ´F244, these devices provide the choice of selected combinations of inverting and noninverting outputs, symmetrical (active-low output-enable) inputs, and complementary OE and inputs.

The ´F240 is organized as two 4-bit buffers/line drivers with separate output enable () inputs. When is low, the device passes data from the A inputs to the Y outputs. When is high, the outputs are in the high-impedance state.

The SN74F240 is available in TI's shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area.

The SN54F240 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74F240 is characterized for operation from 0°C to 70°C.




  • 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
  • Package Options Include Plastic Small-Outline (SOIC) and Shrink Small-Outline (SSOP) Packages, Ceramic Chip Carriers, and Plastic and Ceramic DIPs


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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Channels (#) IOL (Max) (mA) IOH (Max) (mA) ICC (uA) Input type Output type Features Data rate (Mbps) Rating Operating temperature range (C) Package Group
SN74F240 Order now F     4.5     5.5     8     64     -15     75000     Bipolar     3-State     Very high speed (tpd 5-10ns)
Over-voltage tolerant inputs    
140     Catalog     0 to 70     PDIP | 20
SOIC | 20
SO | 20    
SN54F240 Samples not available F     4.5     5.5     8     64     -15     75000     Bipolar     3-State     Very high speed (tpd 5-10ns)
Over-voltage tolerant inputs    
140     Military     -55 to 125     CDIP | 20
CFP | 20
LCCC | 20