PI74FCT3244LE datasheet(4/7 Pages) PERICOM

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PI74FCT3244

3.3V 8-Bit Buffer/Line Driver

PS7067I

06/20/06

Power Supply Characteristics

Parameters

Description

Test Conditions(1)

Min.

Typ.(2)

Max.

Units

ICC

Quiescent Power

Supply Current

VCC = Max.

VIN = GND or VCC

0.1

ΔICC

Quiescent Power

Supply Current, TTL

Inputs HIGH

VCC = Max.

VIN = VCC – 0.6V(3)

500

µA

ICCD

Dynamic Power

Supply(4)

VCC = Max.,

Outputs Open

OEX = GND

One Bit Toggling

50% Duty Cycle

VIN = VCC

VIN = GND

100

µA/

MHz

Total Power Supply

Current(6)

VCC = Max.,

Outputs Open

fI = 10 MHZ

50% Duty Cycle

OEX = GND

One Bit Toggling

VIN = VCC – 0.6V

VIN = GND

0.97

2.3

VCC = Max.,

Outputs Open

fI = 2.5 MHZ

50% Duty Cycle

OEX = GND

8 Bits Toggling

VIN = VCC – 0.6V

VIN = GND

1.9

4.7(5)

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.

2. Typical values are at VCC = 3.3V, TA=+25°C.

3. Per TTL driven input; all other inputs at Vcc or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.

5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested.

6. IC =IQUIECSENT + IINPUTS + IDYNAMIC

IC = ICC + ΔICC DHNT + ICCD (fCP/2 + fINI)

ICC = Quiescent Current (ICCL, ICCH and ICCZ)

ΔICC = Power Supply Current for a TTL High Input

DH = Duty Cycle for TTL Inputs High

NT = Number of TTL Inputs at DH

ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)

fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

NCP = Number of Clock Inputs at fCP

fI = Input Frequency

NI = Number of Inputs at fI

06-0218

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