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IS61C256AH-15JI Datasheet(PDF) 4 Page - Integrated Silicon Solution, Inc |
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IS61C256AH-15JI Datasheet(HTML) 4 Page - Integrated Silicon Solution, Inc |
4 / 8 page 4 Integrated Silicon Solution, Inc. — 1-800-379-4774 SR020-1O 05/24/99 IS61C256AH ISSI® READ CYCLE SWITCHING CHARACTERISTICS(1) (Over Operating Range) -10 -12 -15 -20 -25 Symbol Parameter Min. Max Min. Max. Min. Max. Min. Max. Min. Max. Unit tRC Read Cycle Time 10 — 12 — 15 — 20 — 25 — ns tAA Address Access Time — 10 — 12 — 15 — 20 — 25 ns tOHA Output Hold Time 2 — 2 — 2 — 2 — 2 — ns tACE CE Access Time — 10 — 12 — 15 — 20 — 25 ns tDOE OE Access Time — 5 — 5 — 7 — 8 — 9 ns tLZOE(2) OE to Low-Z Output 0 — 0 — 0 — 0 — 0 — ns tHZOE(2) OE to High-Z Output — 5 — 6 — 7 — 9 — 10 ns tLZCE(2) CE to Low-Z Output 2 — 3 — 3 — 3 — 3 — ns tHZCE(2) CE to High-Z Output — 5 — 7 — 8 — 9 — 10 ns tPU(3) CE to Power-Up 0 — 0 — 0 — 0 — 0 — ns tPD(3) CE to Power-Down — 10 — 12 — 15 — 18 — 20 ns Notes: 1. Test conditions assume signal transition times of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V and output loading specified in Figure 1. 2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested. 3. Not 100% tested. AC TEST CONDITIONS Parameter Unit Input Pulse Level 0V to 3.0V Input Rise and Fall Times 3 ns Input and Output Timing 1.5V and Reference Levels Output Load See Figures 1 and 2 AC TEST LOADS Figure 1 Figure 2 480 Ω 5 pF Including jig and scope 255 Ω OUTPUT 5V 480 Ω 30 pF Including jig and scope 255 Ω OUTPUT 5V |
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