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M74HC237B1R Scheda tecnica(PDF) 2 Page - STMicroelectronics |
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M74HC237B1R Scheda tecnica(HTML) 2 Page - STMicroelectronics |
2 / 11 page M74HC237 2/11 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION TRUTH TABLE X : Don’t Care PIN No SYMBOL NAME AND FUNCTION 1, 2, 3 A, B, C Data Inputs 4GL Latch Enable Input 5G2 Data Enable Input (Active LOW) 6 G1 Data Enable Input (Active HIGH) 15, 14, 13, 12, 11, 10, 9, 7 Y0 to Y7 Decoder Outputs 8 GND Ground (0V) 16 VCC Positive Supply Voltage INPUTS OUTPUTS ENABLE SELECT GL G2 G1 C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 X X L X X X LLLLL LLL XH XXXX LLLLL LLL LL H LLL H LLLL LLL L LHL LHLHL L L L L L L LHLHL L LHL L L L L L LHLH HL L LHL L L L LL H H LLLLLL H LLL LL H H L H LLLLL H L L LL H H H LLLLLL L H L L L HHHH LLLLL LL H H L H X X X Outputs corresponding to stored address H: all others L |
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