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IDT7027L25GB Datasheet(PDF) 7 Page - Integrated Device Technology |
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IDT7027L25GB Datasheet(HTML) 7 Page - Integrated Device Technology |
7 / 19 page 6.42 IDT7027S/L High-Speed 32K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges 7 AC Test Conditions AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Ranges(4,6) 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. 6. Industrial temperature: for other speeds, packages and powers contact your sales office. Figure 1. AC Output Test Load Figure 2. Output Test Load (for tLZ, tHZ, tWZ, tOW) *Including scope and jig. dInput Pulse Levels Input Rise/Fall Times Input Timing Reference Levels Output Reference Levels Output Load GND to 3.0V 5ns Max. 1.5V 1.5V Figures 1 and 2 3199 tbl 11 3199 drw 04 893 Ω 30pF 347 Ω 5V DATAOUT BUSY INT 893 Ω 5pF* 347 Ω 5V DATAOUT 7027X20 Com'l Only 7027X25 Com'l, Ind. & Military 7027X35 Com'l & Military 7027X55 Com'l & Military Symbol Parameter Min.Max.Min. Max.Min. Max.Min. Max. Unit READ CYCLE tRC Read Cycle Time 20 ____ 25 ____ 35 ____ 55 ____ ns tAA Address Access Time ____ 20 ____ 25 ____ 35 ____ 55 ns tACE Chip Enable Access Time (3) ____ 20 ____ 25 ____ 35 ____ 55 ns tABE Byte Enable Access Time (3) ____ 20 ____ 25 ____ 35 ____ 55 ns tAOE Output Enable Access Time ____ 12 ____ 13 ____ 20 ____ 30 ns tOH Output Hold from Address Change 3 ____ 3 ____ 3 ____ 3 ____ ns tLZ Output Low-Z Time (1,2) 3 ____ 3 ____ 3 ____ 3 ____ ns tHZ Output High-Z Time (1,2) ____ 12 ____ 15 ____ 15 ____ 25 ns tPU Chip Enable to Power Up Time (2,5) 0 ____ 0 ____ 0 ____ 0 ____ ns tPD Chip Disable to Power Down Time(2,5) ____ 20 ____ 25 ____ 35 ____ 50 ns tSOP Semaphore Flag Update Pulse ( OE or SEM)10 ____ 12 ____ 15 ____ 15 ____ ns tSAA Semaphore Address Access Time ____ 20 ____ 25 ____ 35 ____ 55 ns 3199 tbl 12 |
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