IDT54/74FCT646/A/C

FAST CMOS OCTAL TRANSCEIVER/REGISTER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

7.18

5

POWER SUPPLY CHARACTERISTICS

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

Unit

Quiescent Power Supply Current

—

0.2

1.5

mA

Quiescent Power Supply Current

—

0.5

2.0

mA

TTL Inputs HIGH

(3)

Dynamic Power Supply Current

(4)

—

0.15

0.25

mA/MHz

Outputs Open

G = DIR = GND

One Input Toggling

50% Duty Cycle

Total Power Supply Current

(6)

—

1.7

4.0

mA

Outputs Open

(FCT)

50% Duty Cycle

G = DIR = GND

—

2.2

6.0

One Bit Toggling

at fi = 5MHz

50% Duty Cycle

—

7.0

12.8

(5)

Outputs Open

(FCT)

50% Duty Cycle

G = DIR = GND

—

9.2

21.8

(5)

Eight Bits Toggling

50% Duty Cycle

NOTES:

2536 tbl 06

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

°C ambient.

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

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