IDT54FCT138ATE 데이터 시트보기 (PDF) - Integrated Device Technology

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IDT54FCT138ATE

FAST CMOS 1-OF-8 DECODER WITH ENABLE

Integrated Device Technology 

IDT54/74FCT138T/AT/CT

FAST CMOS 1-OF-8 DECODER-WITH ENABLE

MILITARY AND COMMERCIAL TEMPERATURE RANGES

POWER SUPPLY CHARACTERISTICS

Symbol

Parameter

Test Conditions(1)

Min. Typ.(2) Max.

∆ICC

Quiescent Power Supply Current VCC = Max.

TTL Inputs HIGH

VIN = 3.4V(3)

— 0.5 2.0

ICCD

Dynamic Power Supply Current(4) VCC = Max.

VIN = VCC

— 0.15 0.3

Outputs Open

VIN = GND

One Bit Toggling

50% Duty Cycle

IC

Total Power Supply Current(6)

VCC = Max.

VIN = VCC

— 1.5 4.0

Outputs Open

Toggle E1, E2 or E3

VIN = GND

50% Duty Cycle

VIN = 3.4V

— 1.8 5.0

fo = 10MHz

VIN = GND

One Input and

One Output Toggling

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 (foNo)

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)

fo = Output Frequency

No = Number of Outputs at fo

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

Unit

mA

mA/

MHz

mA

2570 tbl 06

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

FCT138T

FCT138AT

FCT138CT

Com'l.

Mil.

Com'l.

Mil.

Com'l.

Mil.

Symbol

Parameter

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

tPLH Propagation Delay

tPHL An to On

CL = 50pF

RL = 500Ω

1.5 9.0 1.5 12.0 1.5 5.8 1.5 7.8 1.5 5.1 1.5 6.0 ns

tPLH Propagation Delay

tPHL E1 or E2 to On

1.5 9.0 1.5 12.5 1.5 5.9 1.5 8.0 1.5 5.2 1.5 6.1 ns

tPLH Propagation Delay

tPHL E3 to On

1.5 9.0 1.5 12.5 1.5 5.9 1.5 8.0 1.5 5.2 1.5 6.1 ns

NOTES:

1. See test circuit and waveforms.

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

2570 tbl 07

6.3

4

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