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SNJ54LS224AFK Datasheet(PDF) 6 Page - Texas Instruments |
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SNJ54LS224AFK Datasheet(HTML) 6 Page - Texas Instruments |
6 / 13 page SN54LS224A, SN74LS224A 16 × 4 SYNCHRONOUS FIRST-IN, FIRST-OUT MEMORIES WITH 3-STATE OUTPUTS SDLS023E – JANUARY 1991 – REVISED APRIL 2003 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Note 4) SN54LS224A SN74LS224A UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.75 5 5.25 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.7 0.8 V IOH High level output current Q outputs –1 –2.6 mA IOH High-level output current IR, OR –0.4 –0.4 mA IOL Low level output current Q outputs 12 24 mA IOL Low-level output current IR, OR 4 8 mA TA Operating free-air temperature –55 125 0 70 °C NOTE 4: To ensure proper operation of this high-speed FIFO device, it is necessary to provide a clean signal to the LDCK and UNCK clock inputs. Any excessive noise or glitching on the clock inputs that violates the VIL, VIH, or minimum pulse-duration limits can cause a false clock or improper operation of the internal read and write pointers. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS† SN54LS224A SN74LS224A UNIT PARAMETER TEST CONDITIONS† MIN TYP‡ MAX MIN TYP‡ MAX UNIT VIK VCC = MIN, II = –18 mA –1.5 –1.5 V Q outputs VCC = MIN IOH = –2.6 mA 2.4 3.4 VOH Q outputs VCC = MIN IOH = –1 µA 2.4 3.3 V IR, OR VCC = MIN, IOH = –0.4 mA 2.5 3.4 2.7 3.4 Q outputs VCC = MIN IOL = 12 mA 0.25 0.4 0.25 0.4 VOL Q outputs VCC = MIN IOL = 24 mA 0.35 0.5 V VOL IR OR VCC = MIN IOL = 4 mA 0.25 0.4 0.25 0.4 V IR, OR VCC = MIN IOL = 8 mA 0.35 0.5 IOZH Q outputs VCC = MAX, VO = 2.7 V 20 20 µA IOZL Q outputs VCC = MAX, VO = 0.4 V –20 –20 µA II VCC = MAX, VI = 7 V 0.1 0.1 mA IIH VCC = MAX, VI = 2.7 V 20 20 µA IIL VCC = MAX, VI = 0.4 V –0.4 –0.4 mA I § Q outputs VCC = MAX –30 –130 –30 –130 mA IOS§ IR, OR VCC = MAX –20 –100 –20 –100 mA Outputs high 84 135 84 135 ICC VCC = MAX Outputs low 87 155 87 155 mA Outputs disabled 89 155 89 155 † 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. § Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second. |
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