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74VHCT240AT Datasheet(PDF) 1 Page - STMicroelectronics |
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74VHCT240AT Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 8 page 74VHCT240A OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (INVERTED) August 1999 s HIGH SPEED: tPD = 5 ns (TYP.) at VCC =5V s LOW POWER DISSIPATION: ICC =4 µA (MAX.) at TA =25 oC s COMPATIBLE WITH TTL OUTPUTS: VIH =2V (MIN), VIL = 0.8V (MAX) s POWER DOWN PROTECTION ON INPUTS & OUTPUTS s SYMMETRICAL OUTPUT IMPEDANCE: |IOH|=IOL = 8 mA (MIN) s BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL s OPERATING VOLTAGE RANGE: VCC (OPR) = 4.5V to 5.5V s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 240 s IMPROVED LATCH-UP IMMUNITY s LOW NOISE: VOLP = 0.9V (Max.) DESCRIPTION The 74VHCT240A is an advanced high-speed CMOS OCTAL BUS BUFFER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C 2MOS technology. G output enable governs four BUS BUFFERs. This device is designed to be used with 3 state memory address drivers, etc. Power down protection is provided on all inputs and outputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS ORDER CODES : 74VHCT240AM 74VHCT240AT M (Micro Package) T (TSSOP Package) ® 1/8 |
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