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74LV273DB Arkusz danych(PDF) 2 Page - NXP Semiconductors |
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74LV273DB Arkusz danych(HTML) 2 Page - NXP Semiconductors |
2 / 12 page Philips Semiconductors Product specification 74LV273 Octal D-type flip-flop with reset; positive edge-trigger 2 1998 May 29 853–1965 19466 FEATURES • Wide operating voltage: 1.0 to 5.5V • Optimized for Low Voltage applications: 1.0 to 3.6V • Accepts TTL input levels between V CC = 2.7V and VCC = 3.6V • Typical V OLP (output ground bounce) t 0.8V @ VCC = 3.3V, Tamb = 25°C • Typical V OHV (output VOH undershoot) u 2V @ VCC = 3.3V, Tamb = 25°C • Ideal buffer for MOS microprocessor or memory • Common clock and master reset • Output capability: standard • I CC category: MSI DESCRIPTION The 74LV273 is a low-voltage Si-gate CMOS device and is pin and function compatible with the 74HC/HCT273. The 74LV273 has eight edge-triggered , D-type flip-flops with individual D inputs and Q outputs. The common clock (CP) and master reset (MR) inputs load and reset (clear) all flip-flops simultaneously. The state of each D input, one set-up time before the LOW-to-HIGH clock transition, is transferred to the corresponding output (Qn) of the flip-flop. All outputs will be forced LOW independently of clock or data inputs by a LOW voltage level on the MR input. The device is useful for applications where the true output only is required and the clock and master reset are common to all storage elements. QUICK REFERENCE DATA GND = 0V; Tamb = 25°C; tr =tf v2.5 ns SYMBOL PARAMETER CONDITIONS TYPICAL UNIT tPHL/tPLH Propagation delay CP to Qn; MR to Qn CL = 15pF VCC = 3.3V 12 13 ns fmax Maximum clock frequency 110 MHz CI Input capacitance 3.5 pF CPD Power dissipation capacitance per flip-flop Notes 1 and 2 20 pF NOTES: 1. CPD is used to determine the dynamic power dissipation (PD in µW) PD = CPD VCC2 x fi )S (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; S (CL VCC2 fo) = sum of the outputs. 2. The condition is VI = GND to VCC ORDERING INFORMATION PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA PKG. DWG. # 20-Pin Plastic DIL –40 °C to +125°C 74LV273 N 74LV273 N SOT146-1 20-Pin Plastic SO –40 °C to +125°C 74LV273 D 74LV273 D SOT163-1 20-Pin Plastic SSOP Type II –40 °C to +125°C 74LV273 DB 74LV273 DB SOT339-1 20-Pin Plastic TSSOP –40 °C to +125°C 74LV273 PW 74LV273PW DH SOT360-1 |
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