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TMS44400DGA Datasheet(PDF) 7 Page - Texas Instruments |
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TMS44400DGA Datasheet(HTML) 7 Page - Texas Instruments |
7 / 25 page TMS44400, TMS44400P, TMS46400, TMS46400P 1048576-WORD BY 4-BIT DYNAMIC RANDOM-ACCESS MEMORIES SMHS562C – MAY 1995 – REVISED NOVEMBER 1996 7 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS ’46400 - 60 ’46400P - 60 ’46400 - 70 ’46400P - 70 ’46400 - 80 ’46400P - 80 UNIT PARAMETER CONDITIONS MIN MAX MIN MAX MIN MAX UNIT VOH High-level IOH = – 2 mA (LVTTL) 2.4 2.4 2.4 V VOH High level output voltage IOH = – 100 µA (LVCMOS) VCC – 0.2 VCC – 0.2 VCC – 0.2 V VOL Low-level IOL = 2 mA (LVTTL) 0.4 0.4 0.4 V VOL Low level output voltage IOL = 100 µA (LVCMOS) 0.2 0.2 0.2 V II Input current (leakage) VI = 0 V to 3.9 V, VCC = 3.6 V, All others = 0 V to VCC ± 10 ± 10 ± 10 µA IO Output current (leakage) VO = 0 V to VCC,VCC = 3.6 V, CAS high ± 10 ± 10 ± 10 µA ICC1 Read- or write-cycle current (see Note 3) Minimum cycle, VCC = 3.6 V 70 60 50 mA I Sdb After one memory cycle, RAS and CAS high, VIH = 2 V (LVTTL) 2 2 2 mA ICC2 Standby current After one memory cycle, RAS and CAS high ’46400 300 300 300 µA high, VIH = VCC – 0.2 V (LVCMOS) ’46400P 200 200 200 µA ICC3 Average refresh current (RAS only or CBR) (see Note 4) Minimum cycle, VCC = 3.6 V, RAS cycling, CAS high (RAS only); RAS low after CAS low (CBR) 70 60 50 mA ICC4 Average page current (see Notes 3 and 5) tPC = MIN, VCC = 3.6 V, RAS low, CAS cycling 60 50 40 mA ICC6† Self-refresh current (see Note 3) CAS ≤ 0.2 V, RAS < 0.2 V, tRAS and tCAS > 1000 ms 200 200 200 µA ICC7 Standby current, outputs enabled (see Note 3) RAS = VIH, CAS = VIL, Data out = enabled 5 5 5 mA ICC10† Battery-backup current (with CBR) tRC = 125 µs, tRAS ≤ 1 ms, VCC – 0.2 V ≤ VIH ≤ 3.9 V, 0 V ≤ VIL ≤ 0.2 V, W and OE = VIH, Address and data stable 300 300 300 µA † For TMS46400P only NOTES: 3. ICC MAX is specified with no load connected. 4. Measured with a maximum of one address change while RAS = VIL 5. Measured with a maximum of one address change while CAS = VIH |
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