TC74HC670AP datasheet(1/10 Pages) TOSHIBA

No de pièce	TC74HC670AP

Description	CMOS Digital Integrated Circuit Silicon Monolithic 4 Word 횞 4 Bit Register File (3-state)

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Fabricant	TOSHIBA [Toshiba Semiconductor]

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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

Fabricant	No de pièce	Fiches technique	Description
Toshiba Semiconductor	TC74HC670AP	289Kb / 7P	4 WORDx4 BIT REGISTER FILE(3-STATE)

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