74AVC20T245 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 7 — 8 March 2012 16 of 27
NXP Semiconductors
74AVC20T245
20-bit dual supply translating transceiver; 3-state
[1] V
CCI
is the supply voltage associated with the data input port.
[2] dV/dt 1.0 V/ns
[3] V
CCO
is the supply voltage associated with the output port.
Test data is given in Table 15
.
R
L
= Load resistance.
C
L
= Load capacitance including jig and probe capacitance.
R
T
= Termination resistance.
V
EXT
= External voltage for measuring switching times.
Fig 7. Test circuit for measuring switching times
V
M
V
M
t
W
t
W
10 %
90 %
0 V
V
I
V
I
negative
pulse
positive
pulse
0 V
V
M
V
M
90 %
10 %
t
f
t
r
t
r
t
f
001aae331
V
EXT
V
CC
V
I
V
O
DUT
C
L
R
T
R
L
R
L
G
Table 15. Test data
Supply voltage Input Load V
EXT
V
CC(A)
, V
CC(B)
V
I
[1]
t/V
[2]
C
L
R
L
t
PLH
, t
PHL
t
PZH
, t
PHZ
t
PZL
, t
PLZ
[3]
0.8 V to 1.6 V V
CCI
1.0ns/V 15pF 2k open GND 2V
CCO
1.65 V to 2.7 V V
CCI
1.0ns/V 15pF 2k open GND 2V
CCO
3.0 V to 3.6 V V
CCI
1.0ns/V 15pF 2k open GND 2V
CCO
