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74VHCT245BQ,115

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
74VHC_VHCT245_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 25 August 2009 6 of 16
NXP Semiconductors
74VHC245; 74VHCT245
Octal bus transceiver; 3-state
I
I
input leakage
current
V
I
= 5.5 V or GND;
V
CC
= 0 V to 5.5 V
- - 0.1 - 1.0 - 2.0 µA
I
OZ
OFF-state
output current
V
I
=V
IH
or V
IL
;
V
O
=V
CC
or GND;
V
CC
= 5.5 V
--±0.25 - ±2.5 - ±10.0 µA
I
CC
supply current V
I
=V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
- - 4.0 - 40 - 80 µA
C
I
input
capacitance
V
I
=V
CC
or GND - 3 10 - 10 - 10 pF
C
O
output
capacitance
-4- - - - -pF
74VHCT245
V
IH
HIGH-level
input voltage
V
CC
= 4.5 V to 5.5 V 2.0 - - 2.0 - 2.0 - V
V
IL
LOW-level
input voltage
V
CC
= 4.5 V to 5.5 V - - 0.8 - 0.8 - 0.8 V
V
OH
HIGH-level
output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= −50 µA 4.4 4.5 - 4.4 - 4.4 - V
I
O
= −8.0 mA 3.94 - - 3.80 - 3.70 - V
V
OL
LOW-level
output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= 50 µA - 0 0.1 - 0.1 - 0.1 V
I
O
= 8.0 mA - - 0.36 - 0.44 - 0.55 V
I
I
input leakage
current
V
I
= 5.5 V or GND;
V
CC
= 0 V to 5.5 V
- - 0.1 - 1.0 - 2.0 µA
I
OZ
OFF-state
output current
V
I
=V
IH
or V
IL
;
V
O
=V
CC
or GND per input
pin; other inputs at
V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
--±0.25 - ±2.5 - ±10.0 µA
I
CC
supply current V
I
=V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
- - 4.0 - 40 - 80 µA
∆I
CC
additional
supply current
per input pin;
V
I
=V
CC
− 2.1 V;
other pins at V
CC
or GND;
I
O
= 0 A; V
CC
= 4.5 V to 5.5 V
- - 1.35 - 1.5 - 1.5 mA
C
I
input
capacitance
V
I
=V
CC
or GND - 3 10 - 10 - 10 pF
C
O
output
capacitance
-4- - - - -pF
Table 6. Static characteristics
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ Max Min Max Min Max
74VHC_VHCT245_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 25 August 2009 7 of 16
NXP Semiconductors
74VHC245; 74VHCT245
Octal bus transceiver; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ
[1]
Max Min Max Min Max
74VHC245
t
pd
propagation
delay
An to Bn; Bn to An;
see
Figure 5
[2]
V
CC
= 3.0 V to 3.6 V
C
L
= 15 pF - 5.0 8.4 1.0 10.0 1.0 10.5 ns
C
L
= 50 pF - 6.5 11.9 1.0 13.5 1.0 15.0 ns
V
CC
= 4.5 V to 5.5 V
C
L
= 15 pF - 3.5 5.5 1.0 6.5 1.0 7.0 ns
C
L
= 50 pF 5.0 7.5 1.0 8.5 1.0 9.5 ns
t
en
enable time OE to An; OE to Bn;
signal name DIR;
see
Figure 6
[3]
V
CC
= 3.0 V to 3.6 V
C
L
= 15 pF - 6.5 13.2 1.0 15.5 1.0 16.5 ns
C
L
= 50 pF - 9.0 16.7 1.0 19.0 1.0 21.0 ns
V
CC
= 4.5 V to 5.5 V
C
L
= 15 pF - 4.0 8.5 1.0 10.0 1.0 11.0 ns
C
L
= 50 pF - 5.0 10.6 1.0 12.0 1.0 13.5 ns
t
dis
disable time OE to An; OE to Bn;
signal name DIR;
see
Figure 6
[4]
V
CC
= 3.0 V to 3.6 V
C
L
= 15 pF - 7.5 12.5 1.0 15.5 1.0 16.0 ns
C
L
= 50 pF - 10.0 15.8 1.0 18.0 1.0 20.0 ns
V
CC
= 4.5 V to 5.5 V
C
L
= 15 pF - 4.5 7.8 1.0 9.2 1.0 10.0 ns
C
L
= 50 pF - 6.0 9.7 1.0 11.0 1.0 12.5 ns
C
PD
power
dissipation
capacitance
f
i
= 1 MHz;
V
I
= GND to V
CC
[5]
-12- - - - -pF
74VHCT245; V
CC
= 4.5 V to 5.5 V
t
pd
propagation
delay
An to Bn; Bn to An;
see
Figure 5
[2]
C
L
= 15 pF - 3.5 7.7 1.0 8.5 1.0 10.0 ns
C
L
= 50 pF - 4.5 8.7 1.0 9.5 1.0 11.0 ns
t
en
enable time OE to An; OE to Bn;
signal name DIR;
see
Figure 6
[3]
C
L
= 15 pF - 5.0 13.8 1.0 15.0 1.0 17.5 ns
C
L
= 50 pF - 6.0 14.8 1.0 16.0 1.0 18.5 ns
74VHC_VHCT245_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 25 August 2009 8 of 16
NXP Semiconductors
74VHC245; 74VHCT245
Octal bus transceiver; 3-state
[1] Typical values are measured at nominal supply voltage (V
CC
= 3.3 V and V
CC
= 5.0 V).
[2] t
pd
is the same as t
PLH
and t
PHL
.
[3] t
en
is the same as t
PZL
and t
PZH
.
[4] t
dis
is the same as t
PLZ
and t
PHZ
.
[5] C
PD
is used to determine the dynamic power dissipation (P
D
in µW).
P
D
=C
PD
× V
CC
2
× f
i
× N+Σ(C
L
× V
CC
2
× f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
Σ(C
L
× V
CC
2
× f
o
) = sum of the outputs.
10.1 Waveforms
t
dis
disable time OE to An; OE to Bn;
signal name DIR;
see
Figure 6
[4]
C
L
= 15 pF - 5.0 14.4 1.0 15.5 1.0 18.0 ns
C
L
= 50 pF - 6.0 15.4 1.0 16.5 1.0 19.5 ns
C
PD
power
dissipation
capacitance
f
i
= 1 MHz;
V
I
= GND to V
CC
[5]
-15- - - - -pF
Table 7. Dynamic characteristics
…continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol Parameter Conditions 25 °C −40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ
[1]
Max Min Max Min Max
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 5. Input to output propagation delays
mna176
An,
Bn input
Bn,
An output
t
PLH
t
PHL
GND
V
I
V
M
V
M
V
M
V
M
V
OH
V
OL
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

74VHCT245BQ,115

Mfr. #:
Buy 74VHCT245BQ,115
Manufacturer:
Nexperia
Description:
Bus Transceivers 1CHAN 5.5V 500mW
Lifecycle:
New from this manufacturer.
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