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SN74ALS2232AFN Datasheet(PDF) 5 Page - Texas Instruments |
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SN74ALS2232AFN Datasheet(HTML) 5 Page - Texas Instruments |
5 / 9 page SN74ALS2232A 64 × 8 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY SCAS248 – FEBRUARY 1988 – REVISED MARCH 1990 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 V VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V IOH High level output current Q outputs – 2.6 mA IOH High-level output current FULL, EMPTY – 0.4 mA IOL Low level output current Q outputs 24 mA IOL Low-level output current FULL, EMPTY 8 mA fclock Clock frequency LDCK, UNCK 0 40 MHz RST low 25 LDCK low 13 tw Pulse duration LDCK high 12 ns UNCK low 13 UNCK high 12 tsu1 Setup time, data before LDCK ↑ 5 ns tsu2 Setup time, RST high (inactive) before LDCK ↑ 5 ns th Hold time, data after LDCK ↑ 5 ns TA Operating free-air temperature 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS† MIN TYP‡ MAX UNIT VIK VCC = 4.5 V, II = – 18 mA – 1.2 V VOH Q outputs VCC = 4.5 V, IOH = – 2.6 mA 2.4 3.2 V VOH FULL, EMPTY VCC = MIN to MAX, IOH = 0.4 mA VCC –2 V Q outputs VCC =4 5V IOL = 12 mA 0.25 0.4 VOL Q outputs VCC = 4.5 V IOL = 24 mA 0.35 0.5 V VOL FULL EMPTY VCC =4 5V IOL = 4 mA 0.25 0.4 V FULL, EMPTY VCC = 4.5 V IOL = 8 mA 0.35 0.5 IOZH VCC = 5.5 V, VO = 2.7 V 20 µA IOZL VCC = 5.5 V, VO = 0.4 V –20 µA II VCC = 5.5 V, VI = 7 V 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 µA IIL CLKs VCC =5 5V VI =0 4V – 0.2 mA IIL Others VCC = 5.5 V, VI = 0.4 V – 0.1 mA IO§ Q outputs VCC =5 5V VO = 2 25 V –20 – 130 mA IO§ FULL, EMPTY VCC = 5.5 V, VO = 2.25 V –20 –112 mA ICC VCC = 5.5 V 175 270 mA † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. ‡ All typical values are at VCC = 5 V, TA = 25°C. § The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. |
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