tc74hc670af TOSHIBA Semiconductor CORPORATION, tc74hc670af Datasheet

tc74hc670af

Manufacturer Part Number

tc74hc670af

Description

4 Word ? 4 Bit Register File

Manufacturer

TOSHIBA Semiconductor CORPORATION

Datasheet

1.TC74HC670AF.pdf (10 pages)

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Company:

Meier Automation Equipment Co., Limited

Part Number:

TC74HC670AF

Manufacturer:

TOSHIBA/东芝

Quantity:

20 000

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4 Word × 4 Bit Register File (3-state)

LSTTL while maintaining the CMOS low power dissipation.

and enable inputs ( RE , WE ) are available permitting

simultaneous writing into one word location and reading from

another location.

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.

discharge or transient excess voltage.

Features

•

Pin Assignment

The TC74HC670A is a high speed 4-WORD

It achieves the high speed operation similar to equivalent

The register file is organized as 4 words of 4 bits each.

Separate read and write address inputs (RA, RB, and WA, WB)

Four data inputs (D0~D3) are provided to store the 4-bit words.

The write address inputs (WA, WB) determine the location of

All inputs are equipped with protection circuits against static

High speed: t

Low power dissipation: I

High noise immunity: V

Output drive capability: 10 LSTTL loads

Symmetrical output impedance: |I

Balanced propagation delays: t

Wide operating voltage range: V

Pin and function compatible with 74LS670

TC74HC670AP,TC74HC670AF

= 23 ns (typ.) at V

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

NIH

= 4 μA (max) at Ta = 25°C

= V

pLH

NIL

∼ − t

(opr) = 2 to 6 V

= 28% V

= 5 V

| = I

pHL

× 4-BIT

MOS technology.

= 4 mA (min)

(min)

Weight

DIP16-P-300-2.54A

SOP16-P-300-1.27A

TC74HC670AP

TC74HC670AF

TC74HC670AP/AF

: 1.00 g (typ.)

: 0.18 g (typ.)

2007-10-01

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tc74hc670af Summary of contents

Page 1

... Pin and function compatible with 74LS670 Pin Assignment × 4-BIT S S MOS technology 28% V (min) NIL (min ∼ − t pLH pHL (opr TC74HC670AP/AF TC74HC670AP TC74HC670AF Weight DIP16-P-300-2.54A : 1.00 g (typ.) SOP16-P-300-1.27A : 0.18 g (typ.) 2007-10-01 ...

Page 2

IEC Logic Symbol Truth Table Write Function Table Write Inputs ...

Page 3

System Diagram TC74HC670AP/AF 3 2007-10-01 ...

Page 4

Absolute Maximum Ratings (Note 1) Characteristics Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC V /ground current CC Power dissipation Storage temperature Note 1: Exceeding any of the absolute ...

Page 5

Electrical Characteristics DC Characteristics Characteristics Symbol High-level input V IH voltage Low-level input V IL voltage High-level output V OH voltage Low-level output V OL voltage 3-state output I OZ off-state current Input leakage I IN current Quiescent supply I ...

Page 6

Timing Requirements (input: t Characteristics Symbol Minimum pulse width ( WE ) Minimum set-up time (Dn Minimum set-up time (WA, WB Minimum hold time (Dn Minimum hold time (WA, WB Minimum latch ...

Page 7

AC Characteristics = 50 pF, input Characteristics Symbol t TLH Output transition time t THL Propagation delay t pLH time t pHL (RA, AB-Qn) Propagation delay t pLH time t pHL ( WE -Qn) Propagation delay t ...

Page 8

Package Dimensions Weight: 1.00 g (typ.) TC74HC670AP/AF 8 2007-10-01 ...

Page 9

Package Dimensions Weight: 0.18 g (typ.) TC74HC670AP/AF 9 2007-10-01 ...

Page 10

RESTRICTIONS ON PRODUCT USE • The information contained herein is subject to change without notice. • TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to ...

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