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74HC257D 数据表(PDF) 3 Page - NXP Semiconductors |
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74HC257D 数据表(HTML) 3 Page - NXP Semiconductors |
3 / 13 page 1998 Sep 30 3 Philips Semiconductors Product specification Quad 2-input multiplexer; 3-state 74HC/HCT257 ORDERING INFORMATION PIN DESCRIPTION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION 74HC257N; 74HCT257N DIP16 plastic dual in-line package; 16 leads (300 mil); long body SOT38-1 74HC257D; 74HCT257D SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 74HC257DB; 74HCT257DB SSOP16 plastic shrink small outline package; 16 leads; body width 5.3 mm SOT338-1 74HC257PW; 74HCT257PW TSSOP16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1 PIN NO. SYMBOL NAME AND FUNCTION 1 S common data select input 2, 5, 11, 14 1I0 to 4I0 data inputs from source 0 3, 6, 10, 13 1I1 to 4I1 data inputs from source 1 4, 7, 9, 12 1Y to 4Y 3-state multiplexer outputs 8 GND ground (0 V) 15 OE 3-state output enable input (active LOW) 16 VCC positive supply voltage Fig.1 Pin configuration. fpage GND VCC MLB311 S OE 1Y 2Y 4Y 3Y 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 257 1I0 1I1 2I0 2I1 4I0 4I1 3I0 3I1 Fig.2 Logic symbol. fpage MGA835 S OE 1Y 2Y 3Y 4Y 2 3 5 6 11 10 14 13 15 1 4 7 9 12 1I0 1I1 2I0 2I1 3I0 3I1 4I0 4I1 Fig.3 IEC logic symbol. |
类似零件编号 - 74HC257D |
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类似说明 - 74HC257D |
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