The 74HC240 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 74HC240 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.
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
Specifications:-
| Parameter | Specification |
| Supply Voltage (VCC | − 0.5 to + 7.0V |
| Input Voltage (VIN) | −1.5V to VDD + 1.5V |
| Output Voltage (VOUT) | − 0.5 to VCC + 0.5V |
| Clamp Diode Current (IIK, IOK) | ± 20 mA |
| DC Output Current, per pin (IOUT) | ± 35 mA |
| DC VCC or GND Current, per pin (ICC) | ± 70 mA |
| Storage Temperature Range (TSTG) | − 65°C to + 150°C |
| Power Dissipation (PD) (Note 4) | 600 mW |
| S.O. Package only | 500 mW |
| Lead Temperature (TL) (Soldering 10 seconds) | 260°C |
* product image for illustration purposes only. actual product may vary.
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