74LVT245B_2 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 02 — 8 May 2008 6 of 15
NXP Semiconductors
74LVT245B
3.3 V octal transceiver with direction pin (3-state)
[1] All typical values are measured at V
CC
= 3.3 V (unless stated otherwise) and T
amb
=25°C.
[2] Unused pins at V
CC
or GND.
[3] This parameter is valid for any V
CC
between 0 V and 1.2 V with a transition time of up to 10 ms. From V
CC
= 1.2 V to V
CC
= 3.6 V a
transition time of 100 ms is permitted. This parameter is valid for T
amb
= +25 °C only.
[4] This is the bus hold overdrive current required to force the input to the opposite logic state.
[5] This is the increase in supply current for each input at the specified voltage level other than V
CC
or GND.
10. Dynamic characteristics
I
BHHO
bus hold HIGH
overdrive current
V
CC
= 0 V to 3.0 V; V
I
= 3.6 V - - −500 µA
I
CC
supply current V
CC
= 3.6 V; V
I
=V
CC
or GND; I
O
=0A
outputs HIGH - 0.13 0.19 mA
outputs LOW - 3 12 mA
outputs disabled - 0.13 0.19 mA
∆I
CC
additional supply current per input pin; V
CC
= 3.0 V to 3.6 V;
one input = V
CC
− 0.6 V others = V
CC
or GND
[5]
- 0.1 0.2 mA
C
I
input capacitance DIR and OE inputs; V
I
= 0 V or 3.0 V - 4 - pF
C
I/O
input/output capacitance at input/output data pins, outputs disabled;
V
I/O
= 0 V or 3.0 V
-10-pF
Table 6. Static characteristics
…continued
At recommended operating conditions. Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions −40 °C to +85 °C Unit
Min Typ
[1]
Max
Table 7. Dynamic characteristics
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
t
PLH
LOW to HIGH propagation delay An to Bn or Bn to An
V
CC
= 2.7 V - - 4.0 ns
V
CC
= 3.3 V ± 0.3 V 1.2 2.4 3.5 ns
t
PHL
HIGH to LOW propagation delay An to Bn or Bn to An
V
CC
= 2.7 V - - 4.0 ns
V
CC
= 3.3 V ± 0.3 V 1.2 2.4 3.5 ns
t
PZH
OFF-state to HIGH propagation delay see Figure 6
V
CC
= 2.7 V - - 7.1 ns
V
CC
= 3.3 V ± 0.3 V 1.3 3.3 5.5 ns
t
PZL
OFF-state to LOW propagation delay see Figure 6
V
CC
= 2.7 V - - 6.5 ns
V
CC
= 3.3 V ± 0.3 V 1.7 3.2 5.5 ns
t
PHZ
HIGH to OFF-state propagation delay see Figure 6
V
CC
= 2.7 V - - 6.5 ns
V
CC
= 3.3 V ± 0.3 V 2.2 3.6 5.9 ns
