Fairchild 74LCX240 Data Handbook
Summary
This robust low voltage octal buffer and line driver is engineered for demanding memory address bus, CC clock driving, or general bus transmitter/receiver applications. Featuring durable 5V tolerant inputs and outputs, it ensures reliable data transfer across varying power environments while offering high speed and minimal power consumption. Included in this manual are comprehensive technical specifications, operating guidelines, pin descriptions, and absolute maximum ratings crucial for efficient circuit integration. It is ideal for electronics engineers designing space-constrained, low-voltage digital systems requiring robust signal handling.
Page 1 Text Content
74L 240 — Vo ltag e O ctal B ffer/L in e D river w ith 5V To leran t In ts an tp ts
January 2008
74LCX240 Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs Features General Description 5V tolerant inputs and outputs The LCX240 is an inverting octal buffer and line driver
2.3V–3.6V VCC specifications provided designed to be employed as a memory address driver, clock driver and bus oriented transmitter or receiver. The
6.5ns t PD max. (VCC = 3.3V), 10µA ICC max.
device is designed for low voltage (2.5V or 3.3V) VCC
Power-down high impedance inputs and outputs
applications with capability of interfacing to a 5V signal
Supports live insertion/withdrawal(1)
environment.
±24m A output drive (VCC = 3.0V)
The LCX240 is fabricated with an advanced CMOS tech-
Implements proprietary noise/EMI reduction circuitry
nology to achieve high speed operation while maintain-
Latch-up performance exceeds 500m A ing CMOS low power dissipation. ESD performance: – Human body model > 2000V – Machine model > 200V
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 Information Order Package Number Number Package Description 74LCX240WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74LCX240SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74LCX240MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide 74LCX240MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
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.
©1 994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74L CX240 Rev. 1.6.0
Page Summary Contents For Fairchild 74LCX240 Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 12 |
| File Size | 448.70 KB |
| Published | June 06, 2026 |
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Frequently Asked Questions
Does this device support interfacing with 5V signals?
Yes, it features 5V tolerant inputs and outputs.
How should I wire unused inputs on the LCX240?
Unused inputs must be held HIGH or LOW; they cannot float.
What is the rated output drive current at a 3.0V supply voltage on the LCX240?
The device provides ±24mA of output drive current when V = 3.0V.
Can I design circuitry based on the absolute maximum ratings?
No; recommended operating conditions are specified for optimal performance, and designing to absolute maximum ratings is not recommended.