M74HC573 datasheet(6/12 Pages) STMICROELECTRONICS

Part #	M74HC573

Description	OCTAL D-TYPE LATCH WITH 3 STATE OUTPUT NON INVERTING

PDF	12 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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6 / 12 page

M74HC573

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CAPACITIVE CHARACTERISTICS

1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without

load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/8 (per Flip

Flop) and the CPD when n pcs of Flip Flop operate, can be gained by the following equation: CPD(TOTAL) = 33 + 18 x n (pF)

TEST CIRCUIT

CL = 50pF/150pF or equivalent (includes jig and probe capacitance)

R1 = 1KΩ or equivalent

RT = ZOUT of pulse generator (typically 50Ω)

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

TA = 25°C

-40 to 85°C

-55 to 125°C

Min.

Typ.

Max.

Min.

Max.

Min.

Max.

CIN

Input Capacitance

510

COUT

Output

Capacitance

CPD

Power Dissipation

Capacitance (note

TEST

SWITCH

tPLH, tPHL

Open

tPZL, tPLZ

VCC

tPZH, tPHZ

GND

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