PI74FCT3244R 데이터 시트보기 (PDF) - Pericom Semiconductor

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PI74FCT3244R

Fast CMOS 3.3V 8-Bit Buffer/Line Driver

Pericom Semiconductor 

PI74FCT3244

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Power Supply Characteristics

Parameters Description

ICC

∆ICC

ICCD

Quiescent Power Supply Current

Quiescent Power Supply Current

TTL Inputs HIGH

Dynamic Power Supply(4)

IC

Total Power Supply

Current(6)

Test Conditions(1)

Min.

VCC = Max.

VCC = Max.

VIN = GND or VCC

VIN = VCC – 0.6V(3)

Typ.(2) Max.

0.1 10

2.0 30

Units

µA

µA

VCC = Max.,

Outputs Open

OEX = GND

One Bit Toggling

50% Duty Cycle

VCC = Max.,

Outputs Open

fI = 10 MHZ

50% Duty Cycle

OEX = GND

One Bit Toggling

VCC = Max.,

Outputs Open

fI = 2.5 MHZ

50% Duty Cycle

OEX = GND

8 Bits Toggling

VIN = VCC

VIN = GND

VIN = VCC – 0.6V

VIN = GND

VIN = VCC – 0.6V

VIN = GND

95 100 µA/

MHz

0.97 2.3 mA

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, +25°C ambient.

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 =IQUIESCENT + IINPUTS + IDYNAMIC

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

ICC = Quiescent Current (ICCL, ICCH and ICCZ)

∆ICC = 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

All currents are in milliamps and all frequencies are in megahertz.

3

PS7067E 11/09/98

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