Motore di ricerca datesheet componenti elettronici |
|
SN74ACT7882PN Scheda tecnica(PDF) 11 Page - Texas Instruments |
|
SN74ACT7882PN Scheda tecnica(HTML) 11 Page - Texas Instruments |
11 / 15 page SN74ACT7882 2048 × 18 CLOCKED FIRST-IN, FIRST-OUT MEMORY SCAS445C – JUNE 1994 – REVISED APRIL 1998 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended ranges of supply voltage and operating free-air temperature (see Figures 1 through 5) ’ACT7882-15 ’ACT7882-20 ’ACT7882-30 UNIT MIN MAX MIN MAX MIN MAX UNIT fclock Clock frequency 67 50 33.4 MHz WRTCLK high 5 7 8.5 WRTCLK low 6 7 11 tw Pulse duration RDCLK high 5 7 8.5 ns RDCLK low 6 7 11 DAF high (default AF/AE value) 7 8 10 Data in (D0–D17) before WRTCLK ↑ 5 5 5 WRTEN1, WRTEN2 high before WRTCLK ↑ 4 5 5 OE, RDEN1, RDEN2 high before RDCLK ↑ 4 5 5 tsu Setup time Reset: RESET low before first WRTCLK ↑ and RDCLK ↑† 5 6 7 ns Define AF/AE: D0–D9 before DAF ↓ 5 5 5 Define AF/AE: DAF ↓ before RESET↑ 4 6 7 Define AF/AE (default): DAF high before RESET ↑ 4 5 5 Data in (D0–D17) after WRTCLK ↑ 0 0 0 WRTEN1, WRTEN2 high after WRTCLK ↑ 0 0 0 OE, RDEN1, RDEN2 high after RDCLK ↑ 0 0 1 th Hold time Reset: RESET low after fourth WRTCLK ↑ and RDCLK ↑† 0 0 0 ns Define AF/AE: D0–D9 after DAF ↓ 0 0 0 Define AF/AE: DAF low after RESET ↑ 0 0 0 Define AF/AE (default): DAF high after RESET ↑ 0 0 0 † 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 ’ACT7882-15 ’ACT7882-20 ’ACT7882-30 UNIT PARAMETER (INPUT) (OUTPUT) MIN MAX MIN MAX MIN MAX UNIT fmax WRTCLK or RDCLK 67 50 33.4 MHz tpd RDCLK ↑ Any Q 3 12 3 13 3 18 ns tpd‡ RDCLK ↑ Any Q WRTCLK ↑ IR 2 8 2 9.5 2 12 t d RDCLK ↑ OR 2 8 2 9.5 2 12 ns tpd WRTCLK ↑ AF/AE 6 17 6 19 6 22 RDCLK ↑ AF/AE 6 17 6 19 6 22 tPLH WRTCLK ↑ HF 6 14 6 17 6 21 ns tPHL RDCLK ↑ HF 6 14 6 17 6 21 ns tPLH RESET ↓ AF/AE 3 12 3 17 3 21 ns tPHL RESET ↓ HF 3 14 3 19 3 23 ns ten OE Any Q 2 9 2 11 2 11 ns tdis OE Any Q 2 10 2 14 2 14 ns ‡ This parameter is measured with CL = 30 pF (see Figure 6). |
Codice articolo simile - SN74ACT7882PN |
|
Descrizione simile - SN74ACT7882PN |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore 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 |