Fairchild 74LCX244 Low Voltage Buffer Line Driver with 5V Tolerant Inputs and Outputs - Data Manual
Summary
The 74LCX244 is a robust, low-voltage buffer and line driver featuring eight non-inverting buffers with exceptional compatibility, allowing reliable interfacing between standard 2.5V–3.6V logic and external 5V signal environments. It is ideal for engineers designing digital systems, particularly for bus-oriented transmitters or clock drivers, where maintaining high speed and power efficiency is critical. This manual provides comprehensive specifications, including electrical characteristics, absolute maximum ratings, multiple physical packages (SSOP, TSSOP, etc.), and detailed guidelines required for seamless integration into your circuit design.
Page 1 Text Content
74L 244 L ltag e B ffer/L in e D river w ith 5V To leran t In ts an tp ts
February 1994 Revised March 2005
74LCX244 Low Voltage Buffer/Line Driver with 5V Tolerant Inputs and Outputs General Description Features The LCX244 contains eight non-inverting buffers with ■5V tolerant inputs and outputs 3-STATE outputs. The device may be employed as a mem- ■2.3V to 3.6V VCC specifications provided ory address driver, clock driver and bus-oriented transmit-
■6.5 ns t PD max (VCC 3.3V), 10 PA ICC max
ter/receiver. The LCX244 is designed for low voltage (2.5V or 3.3V) VCC applications with capability of interfacing to a ■Power down high impedance inputs and outputs 5V signal environment. ■Supports live insertion/withdrawal (Note 1) The LCX244 is fabricated with an advanced CMOS tech- ■r24 m A output drive (VCC 3.0V) nology to achieve high speed operation while maintaining
Implements patented noise/EMI reduction circuitry
CMOS low power dissipation.
■Latch-up performance exceeds 500 m A ■ESD performance: Human body model ! 2000V Machine model ! 200V ■Leadless DQFN Pb-Free package Note 1: To ensure the high-impedance state during power up or down, OE should be tied to VCC through a pull-up resistor: the minimum value or the resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Package
Order Number Package Description
Number
74LCX244WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide (Note 2) 74LCX244WMX_NL M20B Pb-Free 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide (Note 4) 74LCX244SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide (Note 2) 74LCX244BQX MLP020B Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC (Note 3) MO-241, 2.5 x 4.5mm 74LCX244MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide (Note 2) 74LCX244MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide (Note 2) 74LCX244MTC_NL MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm (Note 4) Wide 74LCX244MTCX_NL MTC20 Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm (Note 4) Wide Pb-Free package per JEDEC J-STD-020B. Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Note 3: DQFN package available in Tape and Reel only. Note 4: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Please use order number as indicated.
© 2005 Fairchild Semiconductor Corporation DS500107 www.fairchildsemi.com
Page Summary Contents For Fairchild 74LCX244 Low Voltage Buffer Line Driver with 5V Tolerant Inputs and Outputs - Data Manual
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 12 |
| File Size | 435.21 KB |
| Published | June 18, 2026 |
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Frequently Asked Questions
What voltage levels does this buffer support while being low power?
It is designed for low voltage applications (2.5V or 3.3V) but maintains compatibility by having inputs/outputs tolerant up to 5V.
How can I ensure the device stays in a high-impedance state during power cycling?
The OE pin must be tied to V through a pull-up resistor, with the minimum value determined by the current-sourcing capability of the driver.
What is the general operating temperature range for this chip?
The recommended free-air operating temperature range is -40°C to 85°C.