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74HC243DB 数据表(PDF) 2 Page - NXP Semiconductors |
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74HC243DB 数据表(HTML) 2 Page - NXP Semiconductors |
2 / 17 page 9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Product data sheet Rev. 03 — 12 November 2004 2 of 17 Philips Semiconductors 74HC243 Quad bus transceiver; 3-state 3. Quick reference data [1] CPD is used to determine the dynamic power dissipation (PD in µW). PD =CPD × VCC2 × fi × N+ ∑(CL × VCC2 × fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in V; N = number of inputs switching; ∑(C L × VCC 2 × f o) = sum of outputs. 4. Ordering information Table 1: Quick reference data GND = 0 V; Tamb=25 °C; tr =tf = 6 ns. Symbol Parameter Conditions Min Typ Max Unit tPHL, tPLH propagation delay An to Bn; Bn to An CL = 15 pF; VCC = 5 V - 6 - ns CI input capacitance - 3.5 - pF CI/O input/output capacitance - 10 - pF CPD power dissipation capacitance per transceiver VI = GND to VCC [1] -26 - pF Table 2: Ordering information Type number Package Temperature range Name Description Version 74HC243N −40 °C to +125 °C DIP14 plastic dual in-line package; 14 leads (300 mil) SOT27-1 74HC243D −40 °C to +125 °C SO14 plastic small outline package; 14 leads; body width 3.9 mm SOT108-1 74HC243DB −40 °C to +125 °C SSOP14 plastic shrink small outline package; 14 leads; body width 5.3 mm SOT337-1 |
类似零件编号 - 74HC243DB |
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类似说明 - 74HC243DB |
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