Moteur de recherche de fiches techniques de composants électroniques |
|
74ACT257B Fiches technique(PDF) 1 Page - STMicroelectronics |
|
74ACT257B Fiches technique(HTML) 1 Page - STMicroelectronics |
1 / 11 page 1/11 April 2001 s HIGH SPEED: tPD = 5 ns (TYP.) at VCC = 5V s LOW POWER DISSIPATION: ICC = 4 µA(MAX.) at TA=25°C s COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.), VIL = 0.8V (MAX.) s 50 Ω TRANSMISSION LINE DRIVING CAPABILITY s SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (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 257 s IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74ACT257 is an advanced high-speed CMOS QUAD 2-CHANNEL MULTIPLEXER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS tecnology. It is composed of an independent 2-channel multiplexer with common SELECT and ENABLE (OE)inputs. It is a non-inverting multiplexer. When the ENABLE input is held HIGH, the outputs are forced to a high impedance state. When the SELECT input is held LOW, "A" data is selected; when SELECT input is held HIGH, "B" data is selected. The device is designed to interface directly High Speed CMOS systems with TTL, NMOS and CMOS output voltage levels. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. 74ACT257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) PIN CONNECTION AND IEC LOGIC SYMBOLS ORDER CODES PACKAGE TUBE T & R DIP 74ACT257B SOP 74ACT257M 74ACT257MTR TSSOP 74ACT257TTR TSSOP DIP SOP |
Numéro de pièce similaire - 74ACT257B |
|
Description similaire - 74ACT257B |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |