1µA at VOL, VOHData sheet acquired from Harris Semiconductor
The ’HC257 and ’HCT257 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select Input (S). The Output Enable input (OE\) is active LOW. When OE\ is HIGH, all of the outputs (1Y-4Y) are in the high impedance state regardless of all other input conditions.
Moving data from two groups of registers to four common output buses is a common use of the 257. The state of the Select input determines the particular register from which the data comes. It can also be used as a function generator.
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | CD54HC257, CD74HC257, CD54HCT257, CD74HCT257 datasheet (Rev. D) | 16 oct 2003 | |
| Application note | Implications of Slow or Floating CMOS Inputs (Rev. E) | 26 jul 2021 | ||
| Selection guide | Logic Guide (Rev. AB) | 12 jun 2017 | ||
| Application note | Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) | 02 dic 2015 | ||
| User guide | LOGIC Pocket Data Book (Rev. B) | 16 ene 2007 | ||
| Application note | Semiconductor Packing Material Electrostatic Discharge (ESD) Protection | 08 jul 2004 | ||
| User guide | Signal Switch Data Book (Rev. A) | 14 nov 2003 | ||
| Application note | TI IBIS File Creation, Validation, and Distribution Processes | 29 ago 2002 | ||
| Application note | CMOS Power Consumption and CPD Calculation (Rev. B) | 01 jun 1997 | ||
| Application note | Designing With Logic (Rev. C) | 01 jun 1997 | ||
| Application note | SN54/74HCT CMOS Logic Family Applications and Restrictions | 01 may 1996 | ||
| Application note | Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc | 01 abr 1996 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
El módulo de evaluación 14-24-LOGIC-EVM (EVM) está diseñado para admitir cualquier dispositivo lógico que esté en un encapsulado D, DW, DB, NS, PW, DYY o DGV de 14 a 24 pines.
| Paquete | Pasadores | Descargar |
|---|---|---|
| PDIP (N) | 16 | Ver opciones |
| SOIC (D) | 16 | Ver opciones |
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