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74LV251N Arkusz danych(PDF) 2 Page - NXP Semiconductors |
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74LV251N Arkusz danych(HTML) 2 Page - NXP Semiconductors |
2 / 12 page Philips Semiconductors Product specification 74LV251 8-input multiplexer (3-State) 2 1998 May 20 853–1967 19420 FEATURES • Optimized for low voltage applications: 1.0 to 3.6 V • Accepts TTL input levels between V CC = 2.7 V and VCC = 3.6 V • Typical V OLP (output ground bounce) < 0.8 V at VCC = 3.3 V, Tamb = 25°C • Typical V OHV (output VOH undershoot) > 2 V at VCC = 3.3 V, Tamb = 25°C • True and complement outputs • Both outputs are 3-State for further multiplexer expansion • Multifunction capability • Permits multiplexing from n-lines to one line • Output capability: standard • I CC category: MSI DESCRIPTION The 74LV251 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT251. The 74LV251 is an 8-input multiplexer with 8 binary inputs (I0 to I7), an output enable input (OE) and three select inputs (S0, S1, S2). One of the eight binary inputs is selected by the select inputs and is routed to the outputs (Y, Y). Both outputs are in the high impedance OFF-state (Z) when the output enable input is HIGH, allowing multiplexer expansion by tying the outputs. QUICK REFERENCE DATA GND = 0 V; Tamb = 25°C; tr = tf ≤ 2.5 ns SYMBOL PARAMETER CONDITIONS TYPICAL UNIT tPHL/tPLH Propagation delay In to Y In to Y Sn to Y Sn to Y CL = 15 pF; VCC = 3.3 V 14 16 19 20 ns CI Input capacitance 3.5 pF CPD Power dissipation capacitance per gate VCC = 3.3 V VI = GND to VCC1 44 pF NOTE: 1. CPD is used to determine the dynamic power dissipation (PD in µW) PD = CPD × VCC2 × fi ) (CL × VCC2 × fo) where: fi = input frequency in MHz; CL = output load capacitance in pF; fo = output frequency in MHz; VCC = supply voltage in V; (CL × VCC2 × fo) = sum of the outputs. ORDERING INFORMATION PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. # 16-Pin Plastic DIL –40 °C to +125°C 74LV251 N 74LV251 N SOT38-4 16-Pin Plastic SO –40 °C to +125°C 74LV251 D 74LV251 D SOT109-1 16-Pin Plastic SSOP Type II –40 °C to +125°C 74LV251 DB 74LV251 DB SOT338-1 16-Pin Plastic TSSOP Type I –40 °C to +125°C 74LV251 PW 74LV251PW DH SOT403-1 |
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Podobny opis - 74LV251N |
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