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TMS426400 Datasheet(PDF) 9 Page - Texas Instruments |
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TMS426400 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 30 page TMS416400, TMS416400P, TMS417400, TMS417400P TMS426400, TMS426400P, TMS427400, TMS427400P 4194304-WORD BY 4-BIT HIGH-SPEED DRAMS SMKS881B – MAY 1995 – REVISED AUGUST 1995 9 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (continued) TMS417400 / P PARAMETER TEST CONDITIONS† ’417400 - 60 ’417400P - 60 ’417400 - 70 ’417400P - 70 ’417400 - 80 ’417400P - 80 UNIT MIN MAX MIN MAX MIN MAX VOH High-level output voltage IOH = – 5 mA 2.4 2.4 2.4 V VOL Low-level output voltage IOL = 4.2 mA 0.4 0.4 0.4 V II Input current (leakage) VCC = 5.5 V, VI = 0 V to 6.5 V, All others = 0 V to VCC ± 10 ± 10 ± 10 µA IO Output current (leakage) VCC = 5.5 V, VO = 0 V to VCC, CAS high ± 10 ± 10 ± 10 µA ICC1‡§ Read- or write-cycle current VCC = 5.5 V, Minimum cycle 110 100 90 mA I Standby current VIH = 2.4 V ( TTL), After 1 memory cycle, RAS and CAS high 2 2 2 mA ICC2 Standby current VIH = VCC – 0.2 V (CMOS), After 1 memory cycle ’417400 1 1 1 mA After 1 memory cycle, RAS and CAS high ’417400P 500 500 500 µA ICC3‡§ Average refresh current (RAS-only refresh or CBR) VCC = 5.5 V, Minimum cycle, RAS cycling, CAS high (RAS only), RAS low after CAS low (CBR) 110 100 90 mA ICC4‡¶ Average page current VCC = 5.5 V, tPC = MIN, RAS low, CAS cycling 70 60 50 mA ICC6# Self-refresh current CAS < 0.2 V, RAS < 0.2 V, Measured after tRASS min 500 500 500 µA ICC10# Battery back-up operating current (equivalent refresh time is 128 ms); CBR only tRC = 62.5 µs, tRAS ≤ 1 µs, VCC – 0.2 V ≤ VIH ≤ 6.5 V, 0 V ≤ VIL ≤ 0.2 V, W and OE = VIH, Address and data stable 500 500 500 µA † For conditions shown as MIN / MAX, use the appropriate value specified in the timing requirements. ‡ Measured with outputs open § Measured with a maximum of one address change while RAS = VIL ¶ Measured with a maximum of one address change while CAS = VIH # For TMS417400P only |
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