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SN74ACT2236 Folha de dados(PDF) 9 Page - Texas Instruments |
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SN74ACT2236 Folha de dados(HTML) 9 Page - Texas Instruments |
9 / 14 page SN74ACT2236 1024 × 9 × 2 ASYNCHRONOUS BIDIRECTIONAL FIRST IN, FIRST OUT MEMORY SCAS149A − APRIL 1990 − REVISED SEPTEMBER 1995 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VOH VCC = 4.5 V, IOH = − 8 mA 2.4 V VOL Flags VCC = 4.5 V, IOL = 8 mA 0.5 V VOL I/O ports VCC = 4.5 V, IOL = 16 mA 0.5 V II VCC = 5.5 V, VI = VCC or 0 ±5 µA IOZ VCC = 5.5 V, VO = VCC or 0 ±5 µA ICC‡ VI = VCC − 0.2 V or 0 10 400 µA ∆ICC§ DIR, OE VCC = 5.5 V, One input at 3.4 V, Other inputs at VCC or GND 2 mA ∆ICC§ Other inputs VCC = 5.5 V, One input at 3.4 V, Other inputs at VCC or GND 1 mA Ci VI = 0, f = 1 MHz 4 pF Co VO = 0, f = 1 MHz 8 pF † All typical values are at VCC = 5 V, TA = 25°C. ‡ ICC tested with outputs open. § This is the supply current when each input is at one of the specified TTL voltage levels rather than 0 V or VCC. switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figures 4 and 5) PARAMETER FROM TO ′ACT2236-20 ′ACT2236-30 ′ACT2236-40 ′ACT2236-60 UNIT PARAMETER FROM (INPUT) TO (OUTPUT) MIN TYP† MAX MIN MAX MIN MAX MIN MAX UNIT fmax LDCK 50 33 25 16.7 MHz fmax UNCK 50 33 25 16.7 MHz tpd LDCK ↑, LDCKB↑ B or A 8 23 8 23 8 25 8 27 ns tpd UNCKA ↑, UNCKB ↑ B or A 10 17 25 10 25 10 35 10 45 ns tPLH LDCK ↑, LDCKB↑ EMPTYA, EMPTYB 4 15 4 15 4 17 4 19 ns tPHL UNCKA ↑, UNCKB ↑ EMPTYA, EMPTYB 2 17 2 17 2 19 2 21 ns tPHL RSTA ↓, RSTB↓ EMPTYA, EMPTYB 2 18 2 18 2 20 2 22 ns tPHL LDCK ↑, LDCKB↑ FULLA, FULLB 4 15 4 15 4 17 4 19 ns tPLH UNCKA ↑, UNCKB ↑ FULLA, FULLB 4 15 4 15 4 17 4 19 ns tPLH RSTA ↓, RSTB↓ FULLA, FULLB 2 15 2 15 2 17 2 19 ns tPLH RSTA ↓, RSTB↓ AF/AEA, AF/AEB 2 15 2 15 2 17 2 19 ns tPLH LDCK ↑, LDCKB↑ HFA, HFB 2 15 2 15 2 17 2 19 ns tPHL UNCKA ↑, UNCKB ↑ HFA, HFB 4 19 4 19 4 21 4 23 ns tPHL RSTA ↓, RSTB↓ HFA, HFB 1 15 1 15 1 17 1 19 ns tpd SAB or SBA¶ B or A 1 11 1 11 1 13 1 15 ns tpd A or B B or A 1 11 1 11 1 13 1 15 ns tpd LDCK ↑, LDCKB↑ AF/AEA, AF/AEB 2 19 2 19 2 21 2 23 ns tpd UNCKA ↑, UNCKB ↑ AF/AEA, AF/AEB 2 19 2 19 2 23 2 23 ns ten DIR, OE A or B 2 12 2 12 2 14 2 16 ns tdis DIR, OE A or B 1 10 1 10 1 12 1 14 ns † All typical values are at VCC = 5 V, TA = 25°C. ¶ These parameters are measured with the internal output state of the storage register opposite to that of the bus input. |
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Descrição semelhante - SN74ACT2236 |
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