SN54BCT652, SN74BCT652

OCTAL BUS TRANSCEIVERS AND REGISTERS

WITH 3-STATE OUTPUTS

SCBS038A − AUGUST 1989 − REVISED NOVEMBER 1993

2−5

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251−1443

recommended operating conditions

SN54BCT652

SN74BCT652

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

−12

−15

mA

IOL

Low-level output current

48

64

mA

TA

Operating free-air temperature

−55

125

0

70

°C

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54BCT652

SN74BCT652

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = −18 mA

−1.2

−1.2

V

IOH = − 3 mA

2.4

3.3

2.4

3.3

VOH

VCC = 4.5 V

IOH = −12 mA

2

3.2

V

VOH

VCC

4.5 V

IOH = −15 mA

2

3.1

V

V

V

45V

IOL = 48 mA

0.38

0.55

V

VOL

VCC = 4.5 V

IOL = 64 mA

0.42

0.55

V

I

A or B port

V

55V

V

55V

1

1

mA

II

Control inputs

VCC = 5.5 V,

VI = 5.5 V

1

1

mA

I ‡

A or B port

V

55V

V

27V

70

70

A

IIH‡

Control inputs

VCC = 5.5 V,

VI = 2.7 V

20

20

μA

I ‡

A or B port

V

55V

V

05V

− 0.7

− 0.7

mA

IIL‡

Control inputs

VCC = 5.5 V,

VI = 0.5 V

− 0.7

− 0.7

mA

IOS§

VCC = 5.5 V,

VO = 0

− 100

− 225

− 100

− 225

mA

ICCL

A or B port

VCC = 5.5 V,

VI = 0

43

69

43

69

mA

ICCH

A or B port

VCC = 5.5 V,

VI = 4.5 V

6

10

6

10

mA

ICCZ

A or B port

VCC = 5.5 V,

VI = 0

10

17

10

17

mA

Ci

Control inputs

VCC = 5 V,

VI = 2.5 V or 0.5 V

6

6

pF

Cio

A or B port

VCC = 5 V,

VO = 2.5 V or 0.5 V

14

14

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.

timing requirements over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted)

VCC = 5 V,

TA = 25°C

SN54BCT652

SN7BCTT652

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

fclock

Clock frequency

0

77

0

77

0

77

MHz

tw

Pulse duration, CLK high or low

6.5

7

6.5

ns

tsu

Setup time, A or B before CLKAB

↑ or CLKBA↑

5

6

5

ns

th

Hold time, A or B after CLKAB

↑ or CLKBA↑

1

1

1

ns