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74VHC139T Datasheet(PDF) 1 Page - STMicroelectronics |
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74VHC139T Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 8 page 74VHC139 DUAL 2 TO 4 DECODER/DEMULTIPLEXER June 1999 s HIGH SPEED: tPD =5.0 ns (TYP.) at VCC =5V s LOW POWER DISSIPATION: ICC =4 µA (MAX.) at TA =25 oC s HIGH NOISE IMMUNITY: VNIH =VNIL =28% VCC (MIN.) s POWER DOWN PROTECTION ON INPUTS s SYMMETRICAL OUTPUT IMPEDANCE: |IOH|=IOL = 8 mA (MIN) s BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL s OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 5.5V s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 139 s IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74VHC139 is an advanced high-speed CMOS DUAL 2 TO 4 LINE DECODER/ DEMULTIPLEXER fabricated with sub-micron silicon gate and double-layer metal wiring C 2MOS technology. The active low enable input can be used for gating or as a data input for demultiplexing applications. While the enable input is held high, all four outputs are high independently of the other inputs. Power down protection is provided on all inputs 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 M1 (Micro Package) T (TSSOP Package) ORDER CODES : 74VHC139M 74VHC139T ® 1/8 |
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