Obsolete

Product(s)

- Obsolete

Product(s)

74GTL1655A

3/16

Table 3: Function Table (1)

1) A to B data flow is shown. B to A flow is similar, but uses OEBA, LEBA and CLK

2) Output level before the indicated steady-state input conditions were established, provided that CLK was high before LEAB went low

3) Output level before the indicated steady-state input conditions were established

Table 4: Output Enable Truth Table

INPUTS

OUTPUT

MODE

OEAB

LEAB

CLK

A

B

H

XXX

Z

Isolation

L

H

X

L

L

Transparent

L

H

X

H

H

Transparent

LL

LL

Registered

L

L

H

H

Registered

LL

H

X

Previous State

LLL

X

Previous State

INPUTS

OUTPUTS

OE

OEAB

OEBA

A PORT

B PORT

L

L

L

Active

Active

LL

H

Z

Active

LHL

Active

Z

LH

H

Z

Z

HX

X

Z

Z

OUTPUT B PORT EDGE RATE

LOGIC LEVEL

NOMINAL VOLTAGE

H

Slow

LGND

Fast