GTL2018 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 29 August 2011 7 of 16
NXP Semiconductors
GTL2018
8-bit LVTTL to GTL transceiver
11. Dynamic characteristics
[1] All typical values are at V
CC
= 3.3 V and T
amb
=25C.
11.1 Waveforms
V
M
= 1.5 V at V
CC
3.0 V; V
M
=0.5V
CC
at V
CC
2.7 V for A ports and control pins;
V
M
=V
ref
for B ports.
Table 8. Dynamic characteristics
V
CC
=3.3V
0.3 V.
Symbol Parameter Conditions Min Typ
[1]
Max Unit
GTL; V
ref
= 0.6 V; V
TT
=0.9V
t
PLH
LOW to HIGH propagation delay An to Bn; see Figure 3 -2.85ns
t
PHL
HIGH to LOW propagation delay An to Bn; see Figure 3 -3.37ns
t
PLH
LOW to HIGH propagation delay Bn to An; see Figure 4 -5.38ns
t
PHL
HIGH to LOW propagation delay Bn to An; see Figure 4 -5.28ns
GTL; V
ref
= 0.8 V; V
TT
=1.2V
t
PLH
LOW to HIGH propagation delay An to Bn; see Figure 3 -2.85ns
t
PHL
HIGH to LOW propagation delay An to Bn; see Figure 3 -3.47ns
t
PLH
LOW to HIGH propagation delay Bn to An; see Figure 4 -5.28ns
t
PHL
HIGH to LOW propagation delay Bn to An; see Figure 4 -4.97ns
GTL+; V
ref
= 1.0 V; V
TT
=1.5V
t
PLH
LOW to HIGH propagation delay An to Bn; see Figure 3 -2.85ns
t
PHL
HIGH to LOW propagation delay An to Bn; see Figure 3 -3.47ns
t
PLH
LOW to HIGH propagation delay Bn to An; see Figure 4 -5.18ns
t
PHL
HIGH to LOW propagation delay Bn to An; see Figure 4 -4.77ns
V
M
= 1.5 V for A port and V
ref
for B port A port to B port
a. Pulse duration b. Propagation delay times
Fig 3. 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
