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71342LA70JG8 Datasheet(PDF) 6 Page - Integrated Device Technology |
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71342LA70JG8 Datasheet(HTML) 6 Page - Integrated Device Technology |
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6 / 14 page  6.42 IDT71342SA/LA High-Speed 4K x 8 Dual-Port Static RAM with Semaphore Industrial and Commercial Temperature Ranges 6 AC Electrical Characteristics Over the Operating Temperature and Supply Voltage(5) NOTES: 1. Transition is measured 0mV from Low or High-impedance voltage with the Ouput Test Load (Figure 2). 2. This parameter is guaranteed by device characterization, but is not production tested. 3. To access SRAM, CE = VIL, SEM = VIH. To access semaphore, CE = VIH, and SEM = VIL. 4. 'X' in part number indicates power rating (SA or LA). 5. Port-to-port delay through RAM cells from writing port to reading port, refer to “Timing Waveform of Write with Port-to-Port Read”. 71342X20 Com'l Only 71342X25 Com'l & Ind 71342X35 Com'l Only Unit Symbol Parameter Min. Max.Min.Max.Min.Max. READ CYCLE tRC Read Cycle Time 20 ____ 25 ____ 35 ____ ns tAA Address Access Time ____ 20 ____ 25 ____ 35 ns tACE Chip Enable Access Time(3) ____ 20 ____ 25 ____ 35 ns tAOE Output Enable Access Time ____ 15 ____ 15 ____ 20 ns tOH Output Hold from Address Change 0 ____ 0 ____ 0 ____ ns tLZ Output Low-Z Time(1,2) 0 ____ 0 ____ 0 ____ ns tHZ Output High-Z Time(1,2) ____ 15 ____ 15 ____ 20 ns tPU Chip Enable to Power Up Time(2) 0 ____ 0 ____ 0 ____ ns tPD Chip Disable to Power Down Time(2) ____ 50 ____ 50 ____ 50 ns tSOP SEM Flag Update Pulse (OE or SEM) 10 ____ 10 ____ 15 ____ ns tWDD Write Pulse to Data Delay(4) ____ 40 ____ 50 ____ 60 ns tDDD Write Data Valid to Read Data Delay(4) ____ 30 ____ 30 ____ 35 ns tSAA Semaphore Address Access Time ____ ____ ____ 25 ____ 35 ns 2721 tbl 09a 71342X45 Com'l Only 71342X55 Com'l Only 71342X70 Com'l Only Unit Symbol Parameter Min.Max.Min.Max.Min.Max. READ CYCLE tRC Read Cycle Time 45 ____ 55 ____ 70 ____ ns tAA Address Access Time ____ 45 ____ 55 ____ 70 ns tACE Chip Enable Access Time(3) ____ 45 ____ 55 ____ 70 ns tAOE Output Enable Access Time ____ 25 ____ 30 ____ 40 ns tOH Output Hold from Address Change 0 ____ 0 ____ 0 ____ ns tLZ Output Low-Z Time(1,2) 5 ____ 5 ____ 5 ____ ns tHZ Output High-Z Time(1,2) ____ 20 ____ 25 ____ 30 ns tPU Chip Enable to Power Up Time(2) 0 ____ 0 ____ 0 ____ ns tPD Chip Disable to Power Down Time(2) ____ 50 ____ 50 ____ 50 ns tSOP SEM Flag Update Pulse (OE or SEM) 15 ____ 20 ____ 20 ____ ns tWDD Write Pulse to Data Delay(4) ____ 70 ____ 80 ____ 90 ns tDDD Write Data Valid to Read Data Delay(4) ____ 45 ____ 55 ____ 70 ns tSAA Semaphore Address Access Time ____ 45 ____ 55 ____ 70 ns 2721 tbl 09b |
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