Os motores de busca de Datasheet de Componentes eletrônicos |
|
DM54LS491 Folha de dados(PDF) 1 Page - National Semiconductor (TI) |
|
|
DM54LS491 Folha de dados(HTML) 1 Page - National Semiconductor (TI) |
1 / 4 page TLL8332 July 1989 DM54LS49174LS491 10-Bit Counter General Description The ten-bit counter can count up count down set and load 2 LSB’s 2 MSB’s and 6 middle bits high or low as a group All operations are synchronous with the clock SET over- rides LOAD COUNT and HOLD LOAD overrides COUNT COUNT is conditional on CIN otherwise it holds All outputs are enabled when OE is low otherwise HIGH-Z The 24 mA IOL outputs are suitable for driving RAMPROM address lines in video graphics systems FeaturesBenefits Y CRT vertical and horizontal timing generation Y Bus-structured pinout Y 24-pin SKINNYDIP saves space Y TRI-STATE outputs drive bus lines Y Low current PNP inputs reduce loading Connection Diagram Top View TLL8332 – 1 Order Number DM54LS491J DM74LS491J or DM74LS491N See NS Package Number J24F or N24C Standard Test Load TLL8332 – 2 Function Table OE CK SET LD CNT CIN UP D9-D0 Q9-Q0 Operation H X X X X X X X Z Hi-Z L u H X X X X X H Set all HIGH L u L L X X X D D LOAD D L u L H H X X X Q HOLD L u L H L H X X Q HOLD L u L H L L L X Q plus 1 Count UP L u L H L L H X Q minus 1 Count DN TRI-STATE is a registered trademark of National Semiconductor Corp C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
Nº de peça semelhante - DM54LS491 |
|
Descrição semelhante - DM54LS491 |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes 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 |