1. General description
The 74LVT244B; 74LVTH244B is an 8-bit buffer/line driver with 3-state outputs. The device can
be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and
2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a
high-impedance OFF-state. Bus hold data inputs eliminate the need for external pull-up resistors to
define unused inputs
2. Features and benefits
• Octal bus interface
• 3-state buffers
• Speed upgrade of 74LVT244A
• Wide supply voltage range from 2.7 to 3.6 V
• BiCMOS high speed and output drive
• Output capability: +64 mA and -32 mA
• Direct interface with TTL levels
• Overvoltage tolerant inputs to 5.5 V
• Input and output interface capability to systems at 5 V supply
• Bus hold data inputs eliminate need for external pull-up resistors to hold unused inputs
• No bus current loading when output is tied to 5 V bus
• Power-up 3-state
• Live insertion and extraction permitted
• IOFF circuitry provides partial Power-down mode operation
• Latch-up performance exceeds 500 mA per JESD 78 Class II Level B
• Complies with JEDEC standards
• JESD8C (2.7 V to 3.6 V)
• ESD protection:
• HBM EIA/JESD22-A114-C exceeds 2000 V
• MM EIA/JESD22-A115-A 200 V
• Specified from -40 °C to +85 °C