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70V27L20BFG8 Datasheet(PDF) 8 Page - Integrated Device Technology |
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70V27L20BFG8 Datasheet(HTML) 8 Page - Integrated Device Technology |
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8 / 21 page  Commercial and Industrial Temperature Range IDT 70V27S/L High-Speed 3.3V 32K x 16 Dual-Port Static RAM 8 AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range(4) NOTES: 1. Transition is measured 0mV from Low or High-impedance voltage with Output Test Load (Figure 2). 2. This parameter is guaranteed by device characterization, but is not production tested. 3. To access RAM, CE = VIL and SEM = VIH. To access semaphore, CE= VIH and SEM = VIL. 4. 'X' in part numbers indicates power rating (S or L). 5. Refer to Chip Enable Truth Table. 70V27X15 Com'l Only 70V27X20 Com'l & Ind 70V27X25 Com'l Only Unit Symbol Parameter Min. Max. Min. Max. Min. Max. READ CYCLE tRC Read Cycle Time 15 ____ 20 ____ 25 ____ ns tAA Address Access Time ____ 15 ____ 20 ____ 25 ns tACE Chip Enable Access Time(3) ____ 15 ____ 20 ____ 25 ns tABE Byte Enable Access Time(3) ____ 15 ____ 20 ____ 25 ns tAOE Output Enable Access Time ____ 10 ____ 12 ____ 15 ns tOH Output Hold from Address Change 3 ____ 3 ____ 3 ____ ns tLZ Output Low-Z Time(1,2) 3 ____ 3 ____ 3 ____ ns tHZ Output High-Z Time(1,2) ____ 12 ____ 12 ____ 15 ns tPU Chip Enable to Power Up Time(2,5) 0 ____ 0 ____ 0 ____ ns tPD Chip Disable to Power Down Time(2,5) ____ 15 ____ 20 ____ 25 ns tSOP Semaphore Flag Update Pulse (OE or SEM)10 ____ 10 ____ 15 ____ ns tSAA Semaphore Address Access Time ____ 15 ____ 20 ____ 35 ns 3603 tbl 12a 70V27X35 Com'l & Ind 70V27X55 Com'l Only Unit Symbol Parameter Min.Max.Min.Max. READ CYCLE tRC Read Cycle Time 35 ____ 55 ____ ns tAA Address Access Time ____ 35 ____ 55 ns tACE Chip Enable Access Time(3) ____ 35 ____ 55 ns tABE Byte Enable Access Time(3) ____ 35 ____ 55 ns tAOE Output Enable Access Time ____ 20 ____ 30 ns tOH Output Hold from Address Change 3 ____ 3 ____ ns tLZ Output Low-Z Time(1,2) 3 ____ 3 ____ ns tHZ Output High-Z Time(1,2) ____ 20 ____ 25 ns tPU Chip Enable to Power Up Time(2,5) 0 ____ 0 ____ ns tPD Chip Disable to Power Down Time(2,5) ____ 45 ____ 50 ns tSOP Semaphore Flag Update Pulse (OE or SEM)15 ____ 15 ____ ns tSAA Semaphore Address Access Time ____ 45 ____ 65 ns 3603 tbl 12b |
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