SN54ABT853, SN74ABT853

8-BIT TO 9-BIT PARITY BUS TRANSCEIVERS

SCBS198F – FEBRUARY 1991 – REVISED OCTOBER 1997

7

POST OFFICE BOX 655303

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

temperature (unless otherwise noted) (see Figure 1)

VCC = 5 V,

TA = 25°C

SN54ABT853

SN74ABT853

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

t

Pulse duration

LE high or low

3.5

3.5

3.5

ns

tw

Pulse duration

CLR low

4

4

4

ns

t

Setup time

B or PARITY before LE

↓

9.4†

10.2

9.4†

ns

tsu

Setup time

CLR before LE

↓

2

2

2

ns

th

Hold time

B or PARITY after LE

↓

0

0

0

ns

th

Hold time

CLR after LE

↓

3

3

3

ns

† This data sheet limit can vary among suppliers.

switching characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V,

TA = 25°C

SN54ABT853

SN74ABT853

UNIT

(INPUT)

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

tPLH

AorB

BorA

1.2

4.8

1.2

6.4

1.2

5.3

ns

tPHL

A or B

B or A

1

4.8†

1

5.4

1

5.3†

ns

tPLH

A

PARITY

2.1

9.5

2.1

13.3

2.1

11.2

ns

tPHL

A

PARITY

2.5

9.7

2.5

11

2.5

11

ns

tPLH

OE

PARITY

1.8

8.5

1.8

13.6

1.8

10.5

ns

tPHL

OE

PARITY

2.3

8.6

2.3

11.7

2.3

10

ns

tPLH

CLR

ERR

1

5.5

1

6.3

1

6.2

ns

tPLH

LE

ERR

1.8

5.1

1.8

6.1

1.8

6

ns

tPHL

LE

ERR

1†

5.8

1†

6.7

1

6.6

ns

tPLH

B or PARITY

ERR

2

10.1

2

11.8

2

11.7

ns

tPHL

B or PARITY

ERR

2.2†

11.5

2.2†

12.9

2.2†

12.8

ns

tPZH

OE

A or B or PARITY

1

5.8†

1

8.8

1

6.7†

ns

tPZL

OE

A or B or PARITY

1.5†

5.8

1.5†

9.8

1.5†

6.7

ns

tPHZ

OE

A or B or PARITY

1.8†

7.3

1.8†

9.5

1.8†

7.9

ns

tPLZ

OE

A or B or PARITY

2.1†

7.2

2.1†

8.2

2.1†

8.1

ns

† This data sheet limit can vary among suppliers.