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TC74HC670AP Fiches technique(PDF) 1 Page - Toshiba Semiconductor |
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TC74HC670AP Fiches technique(HTML) 1 Page - Toshiba Semiconductor |
1 / 10 page TC74HC670AP/AF 2007-10-01 1 TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74HC670AP,TC74HC670AF 4 Word × 4 Bit Register File (3-state) The TC74HC670A is a high speed 4-WORDS × 4-BITS REGISTER FILE fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. The register file is organized as 4 words of 4 bits each. Separate read and write address inputs (RA, RB, and WA, WB) and enable inputs ( RE , WE ) are available permitting simultaneous writing into one word location and reading from another location. Four data inputs (D0~D3) are provided to store the 4-bit words. The write address inputs (WA, WB) determine the location of the stored word in the register. When write Enable ( WE ) is held low, the data is entered into addressed location. When WE is held high, data and address inputs are inhibited. The data acquisition from the four registers is made possible by the read address inputs (RA, RB) when the Read Enable ( RE ) is held low. When RE is held high the data outputs are in the high impedance state. All inputs are equipped with protection circuits against static discharge or transient excess voltage. Features • High speed: tpd = 23 ns (typ.) at VCC = 5 V • Low power dissipation: ICC = 4 μA (max) at Ta = 25°C • High noise immunity: VNIH = VNIL = 28% VCC (min) • Output drive capability: 10 LSTTL loads • Symmetrical output impedance: |IOH| = IOL = 4 mA (min) • Balanced propagation delays: tpLH ∼− tpHL • Wide operating voltage range: VCC (opr) = 2 to 6 V • Pin and function compatible with 74LS670 Pin Assignment TC74HC670AP TC74HC670AF Weight DIP16-P-300-2.54A : 1.00 g (typ.) SOP16-P-300-1.27A : 0.18 g (typ.) |
Numéro de pièce similaire - TC74HC670AP |
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Description similaire - TC74HC670AP |
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