2

INDUSTRIALTEMPERATURERANGE

IDT74FCT164245T

FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR

PIN CONFIGURATION

Symbol

Description

Max

Unit

VTERM(2) Terminal Voltage with Respect to GND

–0.5 to +7

V

VTERM(3) Terminal Voltage with Respect to GND

–0.5 to Vcc1+0.5

V

TA

Operating Temperature

–40 to +85

°C

TBIAS

Temperature Under Bias

–55 to +125

°C

TSTG

Storage Temperature

–55 to +125

°C

PT

Power Dissipation

1

W

IOUT

DC Output Current

–60 to +120

mA

ABSOLUTE MAXIMUM RATINGS(1)

(1)

(1)

(1)

(1)

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause

permanent damage to the device. This is a stress rating only and functional operation

of the device at these or any other conditions above those indicated in the operational

sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect reliability.

2. All devices except Vcc2.

3. Power supply terminal Vcc2.

Symbol

Parameter(1)

Conditions

Typ.

Max.

Unit

CIN

Input Capacitance

VIN = 0V

3.5

6

pF

CI/O

I/O Capacitance

VOUT = 0V

3.5

8

pF

CAPACITANCE (TA = +25°C, F = 1.0MHz)

NOTE:

1. This parameter is measured at characterization but not tested.

PIN DESCRIPTION

Pin Names

Description

xOE

OutputEnableInput(ActiveLOW)

xDIR

DirectionControlInput

xAx

Side A Inputs or 3-State Outputs (3.3V Port)

xBx

Side B Inputs or 3-State Outputs (5V Port)

SSOP/ TSSOP

TOP VIEW

1

DIR

1

B1

GND

1

B3

VCC1

GND

2

B2

GND

VCC1

GND

1

B2

1

B4

1

B5

1

B6

1

B7

1

B8

2

B1

2

B3

2

B4

2

B5

2

B7

2

B8

2

B6

2

DIR

1

A1

1

A2

GND

1

A3

1

A4

VCC2

1

A5

1

A6

1

A7

1

A8

2

A1

2

A2

2

A3

2

A4

VCC2

2

A5

2

A7

2

A8

2

A6

GND

GND

GND

2

OE

1

OE

39

29

30

31

32

33

34

35

36

37

38

25

26

27

28

48

47

41

42

43

44

45

46

40

1

2

3

4

5

6

7

8

9

10

12

13

14

15

16

17

18

19

20

11

21

22

23

24

FUNCTION TABLE(1)

Inputs

xOE

xDIR

Outputs

L

L

Bus B Data to Bus A

L

H

Bus A Data to Bus B

H

X

High Z State

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don't Care

Z = High-Impedance

POWER SUPPLY SEQUENCING

In the 74FCT164245T, the condition of VCC1

≥ (VCC2 – 0.5V) must be

maintainedatalltimes. FortherangeofVCC1= (VCC2–0.5V)toVCC1= (VCC2

+ 0.9V), both the A and B ports will remain in a High-Impedance state.