Document
74LVT2244, 74LVTH2244 — Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs and 25Ω Series Resistors in the Outputs
February 2008
74LVT2244, 74LVTH2244 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs and 25Ω Series Resistors in the Outputs
Features
■ Input and output interface capability to systems at 5V VCC
■ Equivalent 25Ω-Series resistors on outputs ■ Bushold data inputs eliminate the need for external
pull-up resistors to hold unused inputs (74LVTH2244), also available without bushold feature (74LVT2244) ■ Live insertion/extraction permitted ■ Power Up/Down high impedance provides glitch-free bus loading ■ Outputs source/sink –12mA/+12mA ■ Latch-up performance exceeds 500mA ■ ESD performance: – Human-body model > 2000V – Machine model > 200V – Charged-device model > 1000V
General Description
The LVT2244 and LVTH2244 are octal buffers and line drivers designed to be employed as memory address drivers, clock drivers and bus oriented transmitters or receivers which provides improved PC board density. The equivalent 25Ω-Series resistors helps reduce output overshoot and undershoot.
The LVTH2244 data inputs include bushold, eliminating the need for external pull-up resistors to hold unused inputs.
These octal buffers and line drivers are designed for lowvoltage (3.3V) VCC applications, but with the capability to provide a TTL interface to a 5V environment. The LVT2244 and LVTH2244 are fabricated with an advanced BiCMOS technology to achieve high speed operation similar to 5V ABT while maintaining low power dissipation.
Ordering Information
Order Number 74LVT2244WM 74LVT2244SJ 74LVT2244MTC
74LVTH2244WM 74LVTH2244SJ 74LVTH2244MTC
Package Number
M20B M20D MTC20
M20B M20D MTC20
Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©1999 Fairchild Semiconductor Corporation 74LVT2244, 74LVTH2244 Rev. 1.5.0
www.fairchildsemi.com
74LVT2244, 74LVTH2244 — Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs and 25Ω Series Resistors in the Outputs
Connection Diagram
Logic Symbol
IEEE/IEC
Pin Description
Pin Names
OE1, OE2 I0–I7 O0–O7
Description 3-STATE Output Enable Inputs Inputs Outputs
Truth Tables
Inputs
OE1 L
In L
LH
HX
Inputs
OE2 L
In L
LH
HX
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance
Outputs (Pins 12, 14, 16, 18)
L H Z
Outputs (Pins 3, 5, 7, 9)
L H Z
©1999 Fairchild Semiconductor Corporation 74LVT2244, 74LVTH2244 Rev. 1..