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SN65518 Datasheet(PDF) 3 Page - Texas Instruments |
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SN65518 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 9 page ![]() SN65518, SN75518 VACUUM FLUORESCENT DISPLAY DRIVERS SLDS004B – MARCH 1983 – REVISED MAY 1990 4–3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 FUNCTION TABLE CONTROL INPUTS SHIFT REGISTERS LATCHES OUTPUTS FUNCTION CLOCK LATCH ENABLE STROBE SHIFT REGISTERS R1 THRU R32 LATCHES LC1 THRU LC32 SERIAL Q1 THRU Q32 Load ↑ No ↑ X X X X Load and shift† No change Determined by LATCH ENABLE‡ R32 Determined by STROBE Latch X X L H X X As determined above Stored data New data R32 Determined by STROBE Strobe X X X X H L As determined above Determined by LATCH ENABLE‡ R32 All L LC1 thru LC32, respectively H = high level, L = low level, X = irrelevant, ↑ = low-to-high-level transition. † R32 and the serial output take on the state of R31, R31 takes on the state of R30, ... R2 takes on the state of R1, and R1 takes on the state of the data input. ‡ New data enter the latches while LATCH ENABLE is high. These data are stored while LATCH ENABLE is low. typical operating sequence CLOCK Valid Irrelevant DATA IN Invalid SR Contents LATCH ENABLE Previously Stored Data New Data Valid Latch Contents STROBE Valid Q Outputs Valid |