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IDT74FCT621TSOG

FAST CMOS OCTAL BUS TRANSCEIVER (OPEN DRAIN)

Integrated Device Technology 

IDT74FCT621T/AT

FAST CMOS OCTAL BUS TRANSCEIVER (OPEN DRAIN)

INDUSTRIAL TEMPERATURE RANGE

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified:

Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%

Symbol

Parameter

Test Conditions(1)

Min.

Typ.(2)

Max. Unit

VIH

Input HIGH Level

VIL

Input LOW Level

IIH

Input HIGH Current(4)

IIL

Input LOW Current(4)

II

Input HIGH Current(4)

VIK

Clamp Diode Voltage

IOH

Output HIGH Current

VOL

Output LOW Voltage

(B Bus)

VOL

Output LOW Voltage

(A Bus)

IOFF

Input/Output Power Off

Leakage(4)

VH

Input Hysteresis

ICC

Quiescent Power Supply

Current

Guaranteed Logic HIGH Level

Guaranteed Logic LOW Level

VCC = Max., VI = 2.7V

VCC = Max., VI = 0.5V

VCC = Max., VI = VCC (Max.)

VCC = Min., IN= –18mA

VCC = Max.

VIN = VIH or VIL

VCC = Min.

VIN = VIH or VIL

VCC = Min.

VIN = VIH or VIL

VCC = 0V, VIN or VO - 4.5V

VOH = Vcc (Max.)

IOL = 64mA (3)

IOL = 48mA (3)

—

VCC = max., VIN = GND or Vcc

2

—

—

V

—

—

0.8

V

—

—

±1

µA

—

—

±1

µA

—

—

±1

µA

—

–0.7

–1.2

V

—

—

20

µA

—

0.3

0.55

V

—

0.3

0.5

V

—

—

±1

µA

—

200

—

mV

—

0.01

1

mA

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. These are maximum IOL values per output, for 8 outputs turned on simultaneously. Total maximum IOL (all outputs) is 512mA for commercial and 384mA for military. Derate

IOL for number of outputs exceeding 8 turned on simultaneously.

4. The test limit for this parameter is ±5µA at TA = –55°C.

3

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