SN54LVT18502

3.3-V ABT SCAN TEST DEVICE

WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS

SCBS669 – JULY 1996

27

POST OFFICE BOX 655303

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

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 3.3 V

± 0.3 V

VCC = 2.7 V

UNIT

(INPUT)

(OUTPUT)

MIN

MAX

MIN

MAX

fmax

CLKAB or CLKBA

90

80

MHz

tPLH

AorB

BorA

1.5

6.8

8.4

ns

tPHL

A or B

B or A

1.5

6.8

8.4

ns

tPLH

CLKAB or CLKBA

BorA

2

9

10

ns

tPHL

CLKAB or CLKBA

B or A

2

8.5

9.4

ns

tPLH

LEAB or LEBA

BorA

2.5

10.8

12.5

ns

tPHL

LEAB or LEBA

B or A

2.5

8.6

9.4

ns

tPZH

OEAB or OEBA

BorA

2

10.5

11.5

ns

tPZL

OEAB or OEBA

B or A

2

11

12

ns

tPHZ

OEAB or OEBA

BorA

3

10.8

11.5

ns

tPLZ

OEAB or OEBA

B or A

2.5

9.9

10.6

ns

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

otherwise noted) (test mode) (see Figure 14)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 3.3 V

± 0.3 V

VCC = 2.7 V

UNIT

(INPUT)

(OUTPUT)

MIN

MAX

MIN

MAX

fmax

TCK

50

40

MHz

tPLH

TCK

↓

AorB

3

18

20

ns

tPHL

TCK

↓

A or B

3

18

20

ns

tPLH

TCK

↓

TDO

2

6.6

9

ns

tPHL

TCK

↓

TDO

2.5

8

9

ns

tPZH

TCK

↓

AorB

5

20

23

ns

tPZL

TCK

↓

A or B

5

20

23

ns

tPZH

TCK

↓

TDO

1.5

6.7

8

ns

tPZL

TCK

↓

TDO

2

7

8.5

ns

tPHZ

TCK

↓

AorB

4

22

24

ns

tPLZ

TCK

↓

A or B

4

21

23

ns

tPHZ

TCK

↓

TDO

2.5

8.5

10

ns

tPLZ

TCK

↓

TDO

2

8

9.5

ns