PI74FCT191T datasheet(4/6 Pages) PERICOM

부품명	PI74FCT191T

상세설명	High Speed CMOS Presettable Synchronous 4-Bit Binary Counters

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4 / 6 page

4

PS2084B

01/13/97

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PI74FCT191T

(25

Ω

Ω SERIES) PI74FCT2191T

4-BIT BINARY COUNTERS

Power Supply Characteristics

Parameters

Description

Test Conditions

(1) Min.

Typ

(2)

Max.

Units

ICC

Quiescent Power

VCC = Max.

VIN

≥ VHC;

0.1

500

µA

Supply Current

Freq = 0

VIN

≥ VLC

∆ICC

Supply Current per

VCC = Max.

VIN = 3.4V

(3)

0.5

2.0

mA

Input @ TTL HIGH

Freq = 0

ICCD

Supply Current per

VCC = Max.,

VIN = VCC

0.15

0.25

mA/

Input per MHz

(4)

Outputs Open

VIN = GND

MHz

and Enabled

One Bit Toggling

50% Duty Cycle, other

input at GND or VCC

Ic

Total Power Supply

Vcc=Max., Outputs Open

VIN = Vcc

—

0.8

2.3

mA

Current(6)

Preset Mode

VIN = GND

PL=CE=U/D=CP=GND

One Bit Toggling

VIN = 3.4V

—

1.0

3.3

at fi = 5MHz

VIN = GND

50% Duty Cycle

Vcc=Max., Outputs Open

VIN = Vcc

—

3.0

6.0(5)

Preset Mode

VIN = GND

PL=CE=U/D=CP=GND

Four Bits Toggling

VIN = 3.4V

—

4.0

10.0(5)

at fi = 5MHz

VIN = GND

50% Duty Cycle

Notes:

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

2. Typical values are at VCC = 5.0V, +25°C ambient.

3. Per TTL driven input (VIN = 3.4V); 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

∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)

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)

fI = Input Frequency

NI = Number of Inputs at fI

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

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PI74FCT191T 데이터시트(PDF) 4 Page - Pericom Semiconductor Corporation

PI74FCT191T 데이터시트(HTML) 4 Page - Pericom Semiconductor Corporation

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