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MM74HC240: Inverting Octal 3-STATE Buffer
The MM74HC240 3-STATE buffer utilizes advanced silicon-gate CMOS technology. It possesses high drive current outputs which enable high speed operation even when driving large bus capacitances. These circuits achieve speeds comparable to low power Schottky devices, while retaining the advantage of CMOS circuitry, i.e., high noise immunity and low power consumption. It has a fanout of 15 LS-TTL equivalent inputs. The MM74HC240 is an inverting buffer and has two active LOW enables (1G# and 2G#). Each enable independently controls 4 buffers. All inputs are protected from damage due to static discharge by diodes to VCC and ground.
| MM74HC240 Datasheet |
Features
- Typical propagation delay: 12 ns
- 3-STATE outputs for connection to system buses
- Wide power supply range: 2-6V
- Low quiescent supply current: 80 µA (74 Series)
- Output current: 6 mA
| Product | Product & Eco Status | Unit Price/1K Order | Packing Method Convention | Package Marking Convention* |
|---|---|---|---|---|
| MM74HC240MTC | Full Production Green as of Aug 2011 China RoHS | $0.192 | TSSOP 20L
-
1.2 x 4.4 x 6.5mm,
RAIL
| Line 1$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2HC240 |
| MM74HC240SJX | Full Production ROHS Compliant as of 27-Feb-2006 China RoHS | $0.437 | SOP 20L
-
1.8 x 5.3 x 12.6mm,
TAPE REEL
| Line 1$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2HC240SJ |
| MM74HC240WM | Full Production Green as of Dec 2015 China RoHS | $0.3164 | SO 20L WB
-
2.337 x 7.468 x 15.342mm,
RAIL
| Line 1$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2MM74HC |
| MM74HC240MTCX | Full Production Green as of Aug 2011 China RoHS | $0.192 | TSSOP 20L
-
1.2 x 4.4 x 6.5mm,
TAPE REEL
| Line 1$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2HC240 |
| MM74HC240N | Obsolete as of 02-Mar-2011 ROHS Compliant as of 27-Feb-2006 Replacement Part: An exact replacement is not available. Please contact your Fairchild Sales representative for assistance. China RoHS | N/A | MDIP 20L
-
3.302 x 6.6 x 26.075mm,
RAIL
| Line 1$Y (Fairchild logo) &Z (Plant Code) &4 (4-Digit Date Code) &K&P (Marketing Status Code)
|
| MM74HC240SJ | Obsolete as of 10-Jun-2013 ROHS Compliant as of 27-Feb-2006 Replacement Part: MM74HC240SJX China RoHS | N/A | SOP 20L
-
1.8 x 5.3 x 12.6mm,
RAIL
| Line 1$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2HC240SJ |
| MM74HC240WMX | Full Production Green as of Dec 2015 China RoHS | $0.2631 | SO 20L WB
-
2.337 x 7.468 x 15.342mm,
TAPE REEL
| Line 1$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2MM74HC |
| MM74HC240MTC | 0.7 | 0.6 | 55 | 150 |
| MM74HC240SJX | 0.7 | 0.6 | 55 | 150 |
| MM74HC240WM | 0.7 | 0.6 | 55 | 150 |
| MM74HC240MTCX | 0.7 | 0.6 | 55 | 150 |
| MM74HC240SJ | 0.7 | 0.6 | 55 | 150 |
| MM74HC240WMX | 0.7 | 0.6 | 55 | 150 |
Application Notes
- TSSOP 20L Drawing Last Update: Jan 2015
- MTC20 TSSOP20 Leads, Packing Drawing Last Update: Jan 2016
- SOP 20L Drawing Last Update: Nov 2015
- M20D SOP EIAJ 20L, Packing Drawing Last Update: Jan 2016
- SOIC TUBE Packing Drawing Last Update: Dec 2016
- SO 20L WB Drawing Last Update: Feb 2013
- M20B SOW20, Packing Drawing Last Update: Jan 2016
- SOIC Tape And Reel Packing Drawing Last Update: Jun 2016
- MDIP 20L Drawing Last Update: Jan 2015
- Logic-System Design Techniques Reduce Switching-CMOS Power Last Update : 05-Mar-2011
- CMOS Oscillators Last Update : 05-Mar-2011
- AC Characteristics of MM74HC High Speed CMOS Last Update : 05-Mar-2011
- Fairchilds Process Enhancements Eliminate the CMOS SCR Latch-Up Problem in 74HC Logic Last Update : 05-Mar-2011
- Interfacing to MM74HC High-Speed CMOS Logic Last Update : 05-Mar-2011
- Comparison of MM74HC to 74LS, 74S and 74ALS Logic Last Update : 05-Mar-2011
- DC Electrical Characteristics of MM74HC High Speed CMOS Logic Last Update : 05-Mar-2011
- High Speed CMOS (MM74HC) Processing Last Update : 05-Mar-2011
