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MM74HCT540 − Inverting Octal 3-STATE Buffer
The MM74HCT540 and MM74HCT541 3-STATE buffers utilize advanced silicon-gate CMOS technology and are general purpose high speed inverting and non-inverting buffers. They possess 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 low power consumption of CMOS. Both devices are TTL input compatible and have a fanout of 15 LS-TTL equivalent inputs. MM74HCT devices are intended to interface between TTL and NMOS components and standard CMOS devices. These parts are also plug-in replacements for LS-TTL devices and can be used to reduce power consumption in existing designs. The MM74HCT540 is an inverting buffer and the MM74HCT541 is a non-inverting buffer. The 3-STATE control gate operates as a two-input NOR such that if either G1# or G2# are HIGH, all eight outputs are in the high-impedance state. In order to enhance PC board layout, the MM74HCT540 and MM74HCT541 offers a pinout having inputs and outputs on opposite sides of the package. All inputs are protected from damage due to static discharge by diodes to VCC and ground.
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Product Status/Pricing/Packaging
| Product | Product & Eco Status | *Pricing | Packaging & Packing Info | **Package Marking Convention | Qualification Support | Compliance Certificates |
|---|---|---|---|---|---|---|
| MM74HCT540MTCX |
Full Production Green as of Aug 2011 |
$0.19 | TSSOP 20L Details TAPE REEL |
Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2:74HCT540
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FIT :
0.9
Moisture Sensitivity Level (MSL) : 1 Max Reflow Temp : 260 |
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| MM74HCT540MTC |
Full Production Green as of Aug 2011 |
$0.19 | TSSOP 20L Details RAIL |
Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2:74HCT540
|
FIT :
0.9
Moisture Sensitivity Level (MSL) : 1 Max Reflow Temp : 260 |
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| MM74HCT540WMX |
Full Production ROHS Compliant |
$0.261 | SO 20L WB Details TAPE REEL |
Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2:MM74HCT
Line 3:540WM |
FIT :
0.9
Moisture Sensitivity Level (MSL) : 1 Max Reflow Temp : 260 |
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| MM74HCT540WM |
Full Production ROHS Compliant |
$0.261 | SO 20L WB Details RAIL |
Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2:MM74HCT
Line 3:540WM |
FIT :
0.9
Moisture Sensitivity Level (MSL) : 1 Max Reflow Temp : 260 |
- Fairchild 1,000 piece Budgetary Pricing. *
- If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
- Top mark packaging information for product MM74HCT540 is available. **
Features
- TTL input compatible
- Typical propagation delay: 12 ns
- 3-STATE outputs for connection to system buses
- Low quiescent current: 80 µA
- Output current: 6 mA (min.)
Applications
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Application Notes
| Application Note | Description |
|---|---|
| AN-368 | An Introduction to and Comparison of 74HCT TTL Compatible CMOS Logic(85 K) 05-Mar-2011 |
| AN-313 | DC Electrical Characteristics of MM74HC High Speed CMOS Logic(203 K) 05-Mar-2011 |
| AN-310 | High Speed CMOS (MM74HC) Processing(4,821 K) 05-Mar-2011 |
Models
For additional information please visit the Models page.
| Package | Condition | Temperature Range | Vcc Range | Software Version | Revision Date |
|---|---|---|---|---|---|
| HSPICE | |||||
| SO 20L WB | Typical | 25°C to 150°C | 4.5V to 5.5V | 97.4 | Feb 28, 2012 |
| Slow | 25°C to 150°C | 4.5V to 5.5V | 97.4 | Feb 28, 2012 | |
| Fast | 25°C to 150°C | 4.5V to 5.5V | 97.4 | Feb 28, 2012 | |
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