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DESCRIPTION/ORDERING INFORMATION (CONTINUED)

GQL OR ZQL PACKAGE

(TOP VIEW)

J

H

G

F

E

D

C

B

A

2

1

3 4

6

5

K

SN54LVTH16373

,, SN74LVTH16373

3.3-V ABT 16-BIT TRANSPARENT D-TYPE LATCHES

WITH 3-STATE OUTPUTS

SCBS144P – MAY 1992 – REVISED NOVEMBER 2006

ORDERING INFORMATION (continued)

ORDERABLE PART NUMBER

TOP-SIDE MARKING

Tube

SNJ54LVTH16373WD

–55

°C to 125°C

CFP – WD

SNJ54LVTH16373WD

5962-9681001QXA

These devices can be used as two 8-bit latches or one 16-bit latch. When the latch-enable (LE) input is high, the

Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the levels set up at the

D inputs.

A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high or

low logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the

bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines

without interface or pullup components.

OE does not affect internal operations of the latch. Old data can be retained or new data can be entered while

the outputs are in the high-impedance state.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown

resistors with the bus-hold circuitry is not recommended.

the minimum value of the resistor is determined by the current-sinking capability of the driver.

disables the outputs, preventing damaging current backflow through the devices when they are powered down.

The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,

which prevents driver conflict.

(56-Ball GQL/ZQL Package)

1

2

3

4

5

6

A

1OE

NC

NC

NC

NC

1CLK

B

1Q2

1Q1

GND

GND

1D1

1D2

C

1Q4

1Q3

1D3

1D4

D

1Q6

1Q5

GND

GND

1D5

1D6

E

1Q8

1Q7

1D7

1D8

F

2Q1

2Q2

2D2

2D1

G

2Q3

2Q4

GND

GND

2D4

2D3

H

2Q5

2Q6

2D6

2D5

J

2Q7

2Q8

GND

GND

2D8

2D7

K

2OE

NC

NC

NC

NC

2CLK

(1)

NC – No internal connection

2

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