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74HC237 数据表(PDF) 4 Page - NXP Semiconductors |
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74HC237 数据表(HTML) 4 Page - NXP Semiconductors |
4 / 17 page 74HC237 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet Rev. 6 — 23 August 2012 4 of 17 NXP Semiconductors 74HC237 3-to-8 line decoder, demultiplexer with address latches 5.2 Pin description 6. Functional description [1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state. 7. Limiting values Table 2. Pin description Symbol Pin Description A0 to A2 1, 2, 3 data input LE 4 latch enable input (active LOW) E1 5 data enable input 1 (active LOW) E2 6 data enable input 2 (active HIGH) Y0 to Y7 15, 14, 13, 12, 11, 10, 9, 7 output GND 8 ground (0 V) VCC 16 supply voltage Table 3: Function table Enable Input Output LE E1 E2 A0 A1 A2 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 HL HX X X stable XH XXX XL L L L L L L L X X LX X X LL LLL LLL LL H LL LH L LLL LLL H L LLH LLL LLL LH LLL H LL LLL H H LLL LH L LLL LL H LL LLH LLL HL HL L L L L HL L LH H LL LLL LH L H H H LL LLL LLH Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max Unit VCC supply voltage 0.5 +7 V IIK input clamping current VI < 0.5 V or VI >VCC +0.5 V - 20 mA IOK output clamping current VO < 0.5 V or VO >VCC +0.5 V - 20 mA IO output current VO = 0.5 V to (VCC +0.5 V) - 25 mA ICC supply current - +50 mA IGND ground current - 50 mA Tstg storage temperature 65 +150 C Ptot total power dissipation DIP16 package [1] - 750 mW SO16 and SSOP16 packages [2] - 500 mW |
类似零件编号 - 74HC237_15 |
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类似说明 - 74HC237_15 |
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