Moteur de recherche de fiches techniques de composants électroniques |
|
SN74ACT7805-25DL Fiches technique(PDF) 10 Page - Texas Instruments |
|
SN74ACT7805-25DL Fiches technique(HTML) 10 Page - Texas Instruments |
10 / 14 page SN74ACT7805 256 × 18 CLOCKED FIRST-IN, FIRST-OUT MEMORY SCAS201B – MARCH 1991 – REVISED APRIL 1998 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended operating conditions (unless otherwise noted) (see Figures 1 through 5) ’ACT7805-15 ’ACT7805-20 ’ACT7805-25 ’ACT7805-40 UNIT MIN MAX MIN MAX MIN MAX MIN MAX UNIT fclock Clock frequency 67 50 40 25 MHz WRTCLK high or low 6 7 8 12 tw Pulse duration RDCLK high or low 6 7 8 12 ns PEN low 8 9 9 12 D0–D17 before WRTCLK ↑ 4 5 5 5 WRTEN1, WRTEN2 before WRTCLK ↑ 4 5 5 5 OE1, OE2 before RDCLK ↑ 5 5 6 6 tsu Setup time RDEN before RDCLK ↑ 4 5 5 5 ns tsu Setu time Reset: RESET low before first WRTCLK ↑ and RDCLK↑† 5 6 6 6 ns PEN before WRTCLK ↑ 5 6 6 6 Define AF/AE: PEN before WRTCLK ↑ 5 6 6 6 D0–D17) after WRTCLK ↑ 0 0 0 0 WRTEN1, WRTEN2 after WRTCLK ↑ 0 0 0 0 th Hold time OE1, OE2, RDEN after RDCLK ↑ 0 0 0 0 ns th Hold time Reset: RESET low after fourth WRTCLK ↑ and RDCLK↑† 2 2 2 2 ns Define AF/AE: PEN after WRTCLK ↑ 2 2 2 2 † To permit the clock pulse to be utilized for reset purposes switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 5) PARAMETER FROM TO ’ACT7805-15 ’ACT7805-20 ’ACT7805-25 ’ACT7805-40 UNIT PARAMETER (INPUT) (OUTPUT) MIN TYP† MAX MIN MAX MIN MAX MIN MAX UNIT fmax WRTCLK or RDCLK 67 50 40 25 MHz tpd RDCLK ↑ Any Q 4 9.5 12 4 13 4 15 4 20 ns tpd‡ RDCLK ↑ Any Q 8.5 ns WRTCLK ↑ IR 3 8.5 3 11 3 13 3 15 t d RDCLK ↑ OR 3 8.5 3 11 3 13 3 15 ns tpd WRTCLK ↑ AF/AE 7 16.5 7 19 7 21 7 23 ns RDCLK ↑ AF/AE 7 17 7 19 7 21 7 23 tPLH WRTCLK ↑ HF 7 15 7 17 7 19 7 21 ns tPHL RDCLK ↑ HF 7 15.5 7 18 7 20 7 22 ns tPLH RESET low AF/AE 2 9 2 11 2 13 2 15 ns tPHL RESET low HF 2 10 2 12 2 14 2 16 ns ten OE1, OE2 Any Q 2 8.5 2 11 2 11 2 11 ns tdis OE1, OE2 Any Q 2 9.5 2 11 2 14 2 14 ns ‡ This parameter is measured with a 30-pF load (see Figure 6). |
Numéro de pièce similaire - SN74ACT7805-25DL |
|
Description similaire - SN74ACT7805-25DL |
|
|
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 |