Datasheet

74LVT245 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 4 — 24 December 2013 7 of 16
NXP Semiconductors 74LVT245
3.3 V octal transceiver with direction pin (3-state)
[1] Typical values are measured at T
amb
=25C and V
CC
= 3.3 V.
11. Waveforms
t
PLZ
LOW to OFF-state propagation delay see Figure 6
V
CC
= 2.7 V - - 4.8 ns
V
CC
= 3.3 V  0.3 V 2.0 3.4 4.8 ns
Table 7. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7.
Symbol Parameter Conditions 40 C to +85 C Unit
Min Typ
[1]
Max
See Table 8 for measurement points
V
OL
and V
OH
are typical output voltage levels that occur with the output load.
Fig 5. Input (An, Bn) to output (Bn, An) propagation delays and output transition times
001aah732
V
M
V
M
V
M
V
M
V
I
An, Bn input
GND
V
OH
Bn, An output
V
OL
t
PHL
t
PLH
See Table 8 for measurement points
V
OL
and V
OH
are typical output voltage levels that occur with the output load.
Fig 6. 3-state output enable and disable times
001aah733
outputs
enabled
outputs
enabled
outputs
disabled
V
M
V
M
V
Y
V
M
V
X
V
I
GND
3.0 V
V
OL
V
OH
GND
output
HIGH-to-OFF
OFF-to-HIGH
output
LOW-to-OFF
OFF-to-LOW
t
PZH
t
PHZ
t
PZL
t
PLZ
OE input