SN54BCT245, SN74BCT245

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS013H – SEPTEMBER 1998 – REVISED MAY 2002

3

POST OFFICE BOX 655303

recommended operating conditions (see Note 3)

SN54BCT245

SN74BCT245

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

4.5

5

5.5

V

VIH

High-level input voltage

2

2

V

VIL

Low-level input voltage

0.8

0.8

V

IIK

Input clamp current

–18

–18

mA

IOH

High level output current

A port

– 3

– 3

mA

IOH

High-level output current

B port

–12

–15

mA

IOL

Low level output current

A port

20

24

mA

IOL

Low-level output current

B port

48

64

mA

TA

Operating free-air temperature

– 55

125

0

70

°C

NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54BCT245

SN74BCT245

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = –18 mA

–1.2

–1.2

V

A port

VCC =4 5V

IOH = –1 mA

2.5

3.4

2.5

3.4

A port

VCC = 4.5 V

IOH = – 3 mA

2.4

3.3

2.4

3.3

VOH

IOH = – 3 mA

2.4

3.3

2.4

3.3

V

B port

VCC = 4.5 V

IOH = –12 mA

2

3.2

IOH = – 15 mA

2

3.1

A port

VCC =4 5V

IOL = 20 mA

0.3

0.5

VOL

A port

VCC = 4.5 V

IOL = 24 mA

0.35

0.5

V

VOL

B port

VCC =4 5V

IOL = 48 mA

0.38

0.55

V

B port

VCC = 4.5 V

IOL = 64 mA

0.42

0.55

I

A or B port

VCC =5 5V

VI =5 5V

1

1

mA

II

Control input

VCC = 5.5 V,

VI = 5.5 V

0.1

0.1

mA

I

‡

A or B port

VCC =5 5V

VI =2 7V

70

70

µA

IIH‡

Control input

VCC = 5.5 V,

VI = 2.7 V

20

20

µA

I ‡

A or B port

VCC =5 5V

VI =0 5V

– 0.65

– 0.65

mA

IIL‡

Control input

VCC = 5.5 V,

VI = 0.5 V

–1.2

–1.2

mA

I

§

A port

VCC =5 5V

VO =0

– 60

–150

– 60

–150

mA

IOS§

B port

VCC = 5.5 V,

VO = 0

–100

– 225

–100

– 225

mA

ICCL

A to B

VCC = 5.5 V

57

90

57

90

mA

ICCH

A to B

VCC = 5.5 V

36

57

36

57

mA

ICCZ

VCC = 5.5 V

10

15

10

15

mA

Ci

Control input

VCC = 5 V,

VI = 2.5 V or 0.5 V

7

7

pF

Ci

A to B

VCC =5V

VO =2 5Vor0 5V

9

9

pF

Cio

B to A

VCC = 5 V,

VO = 2.5 V or 0.5 V

12

12

pF

† All typical values are at VCC = 5 V, TA = 25°C.

‡ For I/O ports, the parameters IIH and IIL include the off-state output current.

§ Not more than one output should be tested at a time, and the duration of the test should not exceed one second.