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74VHC541M Scheda tecnica(PDF) 1 Page - National Semiconductor (TI) |
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74VHC541M Scheda tecnica(HTML) 1 Page - National Semiconductor (TI) |
1 / 8 page TLF11639 November 1995 74VHC541 Octal BufferLine Driver with TRI-STATE Outputs General Description The VHC541 is an advanced high-speed CMOS device fab- ricated with silicon gate CMOS technology It achieves the high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation The VHC541 is an octal bufferline driver designed to be employed as memory and address drivers clock drivers and bus oriented transmitterreceivers This device is similar in function to the VHC244 while provid- ing flow-through architecture (inputs on opposite side from outputs) This pinout arrangement makes this device espe- cially useful as an output port for microprocessors allowing ease of layout and greater PC board density An input protection circuit insures that 0V to 7V can be ap- plied to the input pins without regard to the supply voltage This device can be used to interface 5V to 3V systems and two supply systems such as battery backup This circuit pre- vents device destruction due to mismatched supply and in- put voltages Features Y Low power dissipation ICC e 4 mA (max) at TA e 25 C Y High noise immunity VNIH e VNIL e 28% VCC (min) Y All inputs are equipped with a power down protection function Y Balanced propagation delays tPLH j tPHL Y Low noise VOLP e 09V (typ) Y Pin and function compatible with 74HC541 Commercial Package Number Package Description 74VHC541M M20B 20-Lead Molded JEDEC SOIC 74VHC541SJ M20D 20-Lead Molded EIAJ SOIC 74VHC541MTC MTC20 20-Lead Molded JEDEC Type 1 TSSOP 74VHC541N N20A 20-Lead Molded DIP Note Surface mount packages are also available on Tape and Reel Specify by appending the suffix letter ‘‘X’’ to the ordering code Logic Symbol IEEEIEC TLF11639 – 1 Connection Diagram Pin Assignment for DIP TSSOP and SOIC TLF11639 – 2 Truth Table Inputs Outputs OE1 OE2 I LL H H HX X Z XH X Z LL L L H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial Z e High Impedance TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation RRD-B30M125Printed in U S A |
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