GTL2005_7 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 07 — 3 February 2009 11 of 19
NXP Semiconductors
GTL2005
Quad GTL/GTL+ to LVTTL/TTL bidirectional non-latched translator
11. Dynamic characteristics
[1] All typical values are at V
CC
= 3.3 V and T
amb
=25°C.
11.1 Waveforms
V
M
= 1.5 V at V
CC
≥ 3.0 V; V
M
=V
CC
/2 at V
CC
≤ 2.7 V for B ports and control pins;
V
M
=V
ref
for A ports.
Table 8. Dynamic characteristics
V
CC
= 3.3 V
±
0.3 V
Symbol Parameter Conditions Min Typ
[1]
Max Unit
GTL−; V
ref
= 0.6 V
t
PLH
propagation delay, Bn to An see Figure 7 - 2.1 2.3 ns
t
PHL
- 1.9 2.6 ns
t
PLH
propagation delay, An to Bn see Figure 8 - 4.1 5.9 ns
t
PHL
- 4.4 5.9 ns
GTL; V
ref
= 0.8 V
t
PLH
propagation delay, Bn to An see Figure 7 - 2.1 2.3 ns
t
PHL
- 1.9 2.6 ns
t
PLH
propagation delay, An to Bn see Figure 8 - 4.1 5.9 ns
t
PHL
- 4.4 5.9 ns
GTL+; V
ref
= 1.0 V
t
PLH
propagation delay, Bn to An see Figure 7 - 2.1 2.3 ns
t
PHL
- 1.9 2.6 ns
t
PLH
propagation delay, An to Bn see Figure 8 - 4.2 5.7 ns
t
PHL
- 3.8 5.4 ns
V
M
= 1.5 V for B port and V
ref
for A port B port to A port
a. Pulse duration b. Propagation delay times
Fig 7. Voltage waveforms
002aab140
3.0 V
0 V
t
p
V
M
V
M
002aab141
3.0 V
0 V
V
OH
V
OL
t
PLH
t
PHL
V
ref
V
ref
1.5 V 1.5 Vinput
output
