IDT54FCT521CTQ データシートの表示（PDF） - Integrated Device Technology

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IDT54FCT521CTQ

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Integrated Device Technology 

IDT54/74FCT521T/AT/BT/CT

FAST CMOS 8-BIT IDENTITY COMPARATOR

MILITARY AND COMMERCIAL TEMPERATURE RANGES

POWER SUPPLY CHARACTERISTICS

Symbol

Parameter

Test Conditions(1)

Min. Typ.(2) Max.

∆ICC

ICCD

IC

Quiescent Power Supply

Current TTL

Inputs HIGH

Dynamic Power Supply Current(4)

Total Power Supply Current(5)

VCC = Max.

VIN = 3.4V(3)

VCC = Max.

Outputs Open

One Input Toggling

50% Duty Cycle

VCC = Max.

Outputs Open

fi = 10MHz

One Bit Toggling

50% Duty Cycle

VIN = VCC

VIN = GND

VIN = VCC

VIN = GND

VIN = 3.4V

VIN = GND

— 0.5 2.0

— 0.15 0.25

— 1.5 3.5

— 1.8 4.5

NOTES:

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

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.

Unit

mA

mA/

MHz

mA

2572 tbl 06

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

IDT54/74FCT521T IDT54/74FCT521AT IDT54/74FCT521BT IDT54/74FCT521CT

Symbol

Parameter

Com'l. Mil. Com'l. Mil. Com'l. Mil. Com'l. Mil.

Condition(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit

tPLH Propagation

tPHL Delay

An or Bn to

CL = 50pF

1.5 11.0 1.5 15.0 1.5 7.2 1.5 9.5 1.5 5.5 1.5 7.3 1.5 4.5 1.5 5.1 ns

RL = 500Ω

OA = B

tPLH Propagation

tPHL Delay

1.5 10.0 1.5 9.0 1.5 6.0 1.5 7.8 1.5 4.6 1.5 6.0 1.5 4.1 1.5 4.5 ns

IA = B to

OA = B

NOTES:

1. See test circuit and waveforms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

2572 tbl 07

6.16

3

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