GTL2018_1

© NXP B.V. 2007. All rights reserved.

Product data sheet

Rev. 01 — 15 February 2007

4 of 14

NXP Semiconductors

GTL2018

8-bit LVTTL to GTL transceiver

7.

Functional description

Refer to Figure 1 “Logic diagram of GTL2018”.

7.1 Function table

8.

Limiting values

[1]

The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings

are observed.

[2]

Current into any output in the LOW state.

[3]

Current into any output in the HIGH state.

[4]

The performance capability of a high-performance integrated circuit in conjunction with its thermal

environment can create junction temperatures which are detrimental to reliability. The maximum junction

temperature of this integrated circuit should not exceed 150

°C.

Table 4.

Function table

H = HIGH voltage level; L = LOW voltage level.

Input

Input/output

DIR

An (LVTTL)

Bn (GTL)

H

input

Bn = An

L

An = Bn

input

Table 5.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Voltages are referenced to GND (ground=0V).

Symbol

Parameter

Conditions

Min

Max

Unit

supply voltage

−0.5

4.6

V

input clamping current

-

−50

mA

input voltage

A port

−0.5[1]

7.0

V

B port

−0.5[1]

4.6

V

output clamping current

-

−50

mA

output voltage

output in OFF or

HIGH state; A port

−0.5[1]

7.0

V

output in OFF or

HIGH state; B port

−0.5[1]

4.6

V

LOW-level output current

A port

[2] -32

mA

B port

[2] -80

mA

HIGH-level output current

A port

[3] -

−32

mA

storage temperature

[4]

−60

+150

°C