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SN55451B Datasheet(PDF) 6 Page - Texas Instruments |
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SN55451B Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 17 page 
SN55451B, SN55452B, SN55453B, SN55454B SN75451B, SN75452B, SN75453B, SN75454B DUAL PERIPHERAL DRIVERS SLRS021B – DECEMBER 1976 – REVISED SEPTEMBER 1999 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 logic symbol† 5 3 2B 2A 1B 1A 2Y 1Y 7 6 2 1 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC publication 617-12. Pin numbers shown are for the D, JG, and P packages. ≥1 logic diagram (positive logic) 2B 2A 1B 1A 4 5 3 GND 2Y 1Y 7 6 2 1 FUNCTION TABLE (each driver) A B Y L L H (off state) L H L (on state) H L L (on state) H H L (on state) positive logic: Y = A+B or AB electrical characteristics over recommended operating free-air temperature range PARAMETER TEST CONDITIONS‡ SN55454B SN75454B UNIT PARAMETER TEST CONDITIONS‡ MIN TYP§ MAX MIN TYP§ MAX UNIT VIK Input clamp voltage VCC = MIN, II = – 12 mA – 1.2 – 1.5 – 1.2 – 1.5 V VCC = MIN, VIH = MIN, 025 05 025 04 VOL Low level output voltage CC , IOL = 100 mA IH , 0.25 0.5 0.25 0.4 V VOL Low-level output voltage VCC = MIN, VIH = MIN, 05 08 05 07 V CC , IOL = 300 mA IH , 0.5 0.8 0.5 0.7 IOH High level output current VCC = MIN, VIL = 0.8 V, 300 100 µA IOH High-level output current CC , VOH = 30 V IL , 300 100 µA II Input current at maximum input voltage VCC = MAX, VI = 5.5 V 1 1 mA IIH High-level input current VCC = MAX, VI = 2.4 V 40 40 µA IIL Low-level input current VCC = MAX, VI = 0.4 V –1 – 1.6 –1 – 1.6 mA ICCH Supply current, outputs high VCC = MAX, VI = 0 13 17 13 17 mA ICCL Supply current, outputs low VCC = MAX, VI = 5 V 61 79 61 79 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. switching characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tPLH Propagation delay time, low-to-high-level output 27 35 tPHL Propagation delay time, high-to-low-level output IO ≈ 200 mA, CL = 15 pF, 24 35 ns tTLH Transition time, low-to-high-level output O , RL = 50 Ω, L , See Figure 1 5 8 ns tTHL Transition time, high-to-low-level output 7 12 VOH High level output voltage after switching SN55454B VS = 20 V, IO ≈ 300 mA, VS – 6.5 mV VOH High-level output voltage after switching SN75454B S See Figure 2 O VS – 6.5 mV 4 k Ω 1.6 k Ω 2 k Ω schematic (each driver) Resistor values shown are nominal. VCC A GND Y 500 Ω 1 k Ω B 4 k Ω 2 k Ω 130 Ω 1 k Ω |
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