74VHC245BQ [NEXPERIA]
Octal bus transceiver; 3-stateProduction;
| 型号： | 74VHC245BQ |
| 厂家： | 
Nexperia |
| 描述： | Octal bus transceiver; 3-stateProduction |
| 文件： | 总16页 (文件大小：602K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74VHC245; 74VHCT245
Octal bus transceiver; 3-state
Rev. 01 — 25 August 2009
Product data sheet
1. General description
The 74VHC245; 74VHCT245 are high-speed Si-gate CMOS devices.
The 74VHC245; 74VHCT245 are octal transceivers featuring non-inverting 3-state bus
compatible outputs in both send and receive directions.
The 74VHC245; 74VHCT245 feature an output enable input (OE), for easy cascading,
and a send and receive direction control input (DIR).
OE controls the outputs so that the buses are effectively isolated.
2. Features
I Balanced propagation delays
I All inputs have Schmitt-trigger action
I Inputs accept voltages higher than VCC
I Input levels:
N The 74VHC245 operates with CMOS input level
N The 74VHCT245 operates with TTL input level
I ESD protection:
N HBM JESD22-A114E exceeds 2000 V
N MM JESD22-A115-A exceeds 200 V
N CDM JESD22-C101C exceeds 1000 V
I Multiple package options
I Specified from −40 °C to +85 °C and from −40 °C to +125 °C
3. Ordering information
Table 1.
Ordering information
Type number
Package
Temperature range
−40 °C to +125 °C
Name
Description
Version
74VHC245D
SO20
plastic small outline package; 20 leads;
body width 7.5 mm
SOT163-1
74VHCT245D
74VHC245PW
74VHCT245PW
74VHC245BQ
74VHCT245BQ
−40 °C to +125 °C
−40 °C to +125 °C
TSSOP20
plastic thin shrink small outline package; 20 leads; SOT360-1
body width 4.4 mm
DHVQFN20 plastic dual-in-line compatible thermal enhanced
very thin quad flat package; no leads; 20 terminals;
body 2.5 × 4.5 × 0.85 mm
SOT764-1
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
4. Functional diagram
DIR
1
OE
19
18
17
A0
2
B0
B1
A1
3
A2
4
19
G3
B2
B3
B4
B5
B6
B7
1
3EN1
16
15
3EN2
A3
5
1
A4
6
18
2
2
14
13
12
11
3
4
5
6
7
8
9
17
16
15
14
13
12
11
A5
7
A6
8
A7
9
mna175
mna174
Fig 1. Logic symbol
Fig 2. IEC logic symbol
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
2 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
5. Pinning information
5.1 Pinning
74VHC245
74VHCT245
terminal 1
index area
74VHC245
74VHCT245
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
A0
A1
A2
A3
A4
A5
A6
A7
OE
B0
B1
B2
B3
B4
B5
B6
1
2
20
19
18
17
16
15
14
13
12
11
DIR
A0
V
CC
OE
B0
B1
B2
B3
B4
B5
B6
B7
3
A1
4
A2
5
A3
6
A4
(1)
GND
7
A5
8
A6
9
A7
001aak060
10
GND
Transparent top view
001aak059
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as
a supply pin or input.
Fig 3. Pin configuration SO20, TSSOP20
Fig 4. Pin configuration DHVQFN20
5.2 Pin description
Table 2.
Symbol
DIR
A0
Pin description
Pin
Description
1
direction control input
data input/output
data input/output
data input/output
data input/output
data input/output
data input/output
data input/output
data input/output
ground (0 V)
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
GND
B7
10
11
12
13
14
15
16
data input/output
data input/output
data input/output
data input/output
data input/output
data input/output
B6
B5
B4
B3
B2
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
3 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
Table 2.
Symbol
B1
Pin description …continued
Pin
17
18
19
20
Description
data input/output
B0
data input/output
OE
output enable input (active LOW)
supply voltage
VCC
6. Functional description
Table 3.
Function table[1]
Control
Input/output
OE
L
DIR
An
Bn
L
A = B
inputs
Z
inputs
B = A
Z
L
H
X
H
[1] H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
VCC
VI
Parameter
Conditions
Min
−0.5
−0.5
−20
−20
−25
-
Max
+7.0
+7.0
-
Unit
V
supply voltage
input voltage
V
[1]
[1]
IIK
input clamping current
output clamping current
output current
VI < −0.5 V
mA
mA
mA
mA
mA
°C
IOK
VO < −0.5 V or VO > VCC + 0.5 V
VO = −0.5 V to (VCC + 0.5 V)
+20
+25
+75
-
IO
ICC
supply current
IGND
Tstg
Ptot
ground current
−75
−65
-
storage temperature
total power dissipation
+150
500
[2]
Tamb = −40 °C to +125 °C
mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO20 packages: above 70 °C the value of Ptot derates linearly at 8 mW/K.
For TSSOP20 packages: above 60 °C the value of Ptot derates linearly at 5.5 mW/K.
For DHVQFN20 packages: above 60 °C the value of Ptot derates linearly at 4.5 mW/K.
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
4 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
8. Recommended operating conditions
Table 5.
Operating conditions
Symbol Parameter
74VHC245
Conditions
Min
Typ
Max
Unit
VCC
VI
supply voltage
2.0
5.0
5.5
V
input voltage
0
-
5.5
V
VO
output voltage
0
-
VCC
+125
100
20
V
Tamb
∆t/∆V
ambient temperature
input transition rise and fall rate
−40
+25
°C
ns/V
ns/V
VCC = 3.0 V to 3.6 V
VCC = 4.5 V to 5.5 V
-
-
-
-
74VHCT245
VCC
VI
supply voltage
4.5
0
5.0
5.5
V
input voltage
-
5.5
V
VO
output voltage
0
-
VCC
+125
20
V
Tamb
∆t/∆V
ambient temperature
input transition rise and fall rate
−40
-
+25
-
°C
ns/V
VCC = 4.5 V to 5.5 V
9. Static characteristics
Table 6.
Static characteristics
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
74VHC245
VIH
HIGH-level
input voltage
VCC = 2.0 V
1.5
-
-
-
-
-
-
-
-
1.5
-
-
1.5
-
-
V
V
V
V
V
V
VCC = 3.0 V
2.1
2.1
2.1
VCC = 5.5 V
3.85
-
3.85
-
3.85
-
VIL
LOW-level
input voltage
VCC = 2.0 V
-
-
-
0.5
0.9
1.65
-
-
-
0.5
0.9
1.65
-
-
-
0.5
0.9
1.65
VCC = 3.0 V
VCC = 5.5 V
VOH
HIGH-level
VI = VIH or VIL
output voltage
IO = −50 µA; VCC = 2.0 V
IO = −50 µA; VCC = 3.0 V
IO = −50 µA; VCC = 4.5 V
IO = −4.0 mA; VCC = 3.0 V
IO = −8.0 mA; VCC = 4.5 V
VI = VIH or VIL
1.9
2.9
2.0
3.0
4.5
-
-
-
-
-
-
1.9
2.9
-
-
-
-
-
1.9
2.9
-
-
-
-
-
V
V
V
V
V
4.4
4.4
4.4
2.58
3.94
2.48
3.80
2.40
3.70
-
VOL
LOW-level
output voltage
IO = 50 µA; VCC = 2.0 V
IO = 50 µA; VCC = 3.0 V
IO = 50 µA; VCC = 4.5 V
IO = 4.0 mA; VCC = 3.0 V
IO = 8.0 mA; VCC = 4.5 V
-
-
-
-
-
0
0
0
-
0.1
0.1
-
-
-
-
-
0.1
0.1
-
-
-
-
-
0.1
0.1
V
V
V
V
V
0.1
0.1
0.1
0.36
0.36
0.44
0.44
0.55
0.55
-
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
5 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
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
II
input leakage VI = 5.5 V or GND;
-
-
0.1
-
1.0
-
2.0
µA
µA
current
V
CC = 0 V to 5.5 V
IOZ
OFF-state
VI = VIH or VIL;
-
-
±0.25
-
±2.5
-
±10.0
output current VO = VCC or GND;
CC = 5.5 V
V
ICC
CI
supply current VI = VCC or GND; IO = 0 A;
CC = 5.5 V
-
-
-
-
4.0
10
-
-
-
-
40
10
-
-
-
-
80
10
-
µA
pF
pF
V
input
VI = VCC or GND
3
4
capacitance
CO
output
capacitance
74VHCT245
VIH
HIGH-level
input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
2.0
-
-
-
-
2.0
-
-
2.0
-
-
V
V
VIL
LOW-level
0.8
0.8
0.8
input voltage
VOH
HIGH-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = −50 µA
4.4
4.5
-
-
-
4.4
-
-
4.4
-
-
V
V
IO = −8.0 mA
3.94
3.80
3.70
VOL
LOW-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 50 µA
-
-
-
0
-
0.1
0.36
0.1
-
-
-
0.1
0.44
1.0
-
-
-
0.1
0.55
2.0
V
IO = 8.0 mA
V
II
input leakage VI = 5.5 V or GND;
-
µA
current
V
CC = 0 V to 5.5 V
IOZ
OFF-state
VI = VIH or VIL;
-
-
±0.25
-
±2.5
-
±10.0
µA
output current VO = VCC or GND per input
pin; other inputs at
V
V
CC or GND; IO = 0 A;
CC = 5.5 V
ICC
supply current VI = VCC or GND; IO = 0 A;
CC = 5.5 V
-
-
-
-
4.0
-
-
40
-
-
80
µA
V
∆ICC
additional
per input pin;
supply current VI = VCC − 2.1 V;
other pins at VCC or GND;
1.35
1.5
1.5
mA
IO = 0 A; VCC = 4.5 V to 5.5 V
CI
input
capacitance
VI = VCC or GND
-
-
3
4
10
-
-
-
10
-
-
-
10
-
pF
pF
CO
output
capacitance
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
6 of 16
74VHC245; 74VHCT245
Nexperia
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
74VHC245
25 °C
−40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ[1] Max Min
Max
Min
Max
[2]
tpd
propagation An to Bn; Bn to An;
delay
see Figure 5
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
-
5.0
8.4
1.0
1.0
10.0
13.5
1.0
1.0
10.5
15.0
ns
ns
CL = 50 pF
6.5 11.9
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
3.5
5.0
5.5
7.5
1.0
1.0
6.5
8.5
1.0
1.0
7.0
9.5
ns
ns
CL = 50 pF
[3]
ten
enable time OE to An; OE to Bn;
signal name DIR;
see Figure 6
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
-
6.5 13.2
9.0 16.7
1.0
1.0
15.5
19.0
1.0
1.0
16.5
21.0
ns
ns
CL = 50 pF
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
-
4.0
8.5
1.0
1.0
10.0
12.0
1.0
1.0
11.0
13.5
ns
ns
CL = 50 pF
5.0 10.6
[4]
tdis
disable time OE to An; OE to Bn;
signal name DIR;
see Figure 6
VCC = 3.0 V to 3.6 V
CL = 15 pF
-
-
7.5 12.5
10.0 15.8
1.0
1.0
15.5
18.0
1.0
1.0
16.0
20.0
ns
ns
CL = 50 pF
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
-
-
4.5
6.0
12
7.8
9.7
-
1.0
1.0
-
9.2
11.0
-
1.0
1.0
-
10.0
12.5
-
ns
ns
pF
CL = 50 pF
[5]
[2]
CPD
power
dissipation
capacitance
fi = 1 MHz;
VI = GND to VCC
74VHCT245; VCC = 4.5 V to 5.5 V
tpd propagation An to Bn; Bn to An;
delay
see Figure 5
CL = 15 pF
CL = 50 pF
-
-
3.5
4.5
7.7
8.7
1.0
1.0
8.5
9.5
1.0
1.0
10.0
11.0
ns
ns
[3]
ten
enable time OE to An; OE to Bn;
signal name DIR;
see Figure 6
CL = 15 pF
CL = 50 pF
-
-
5.0 13.8
6.0 14.8
1.0
1.0
15.0
16.0
1.0
1.0
©
17.5
18.5
ns
ns
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
7 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
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
[4]
[5]
tdis
disable time OE to An; OE to Bn;
signal name DIR;
see Figure 6
CL = 15 pF
CL = 50 pF
-
-
-
5.0 14.4
6.0 15.4
1.0
1.0
-
15.5
16.5
-
1.0
1.0
-
18.0
19.5
-
ns
ns
pF
CPD
power
fi = 1 MHz;
15
-
dissipation
capacitance
VI = GND to VCC
[1] Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V).
[2] tpd is the same as tPLH and tPHL
[3] ten is the same as tPZL and tPZH
[4] tdis is the same as tPLZ and tPHZ
.
.
.
[5] CPD is used to determine the dynamic power dissipation (PD in µW).
PD = CPD × VCC2 × fi × N + Σ(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
Σ(CL × VCC2 × fo) = sum of the outputs.
10.1 Waveforms
V
I
An, Bn input
GND
V
M
V
M
t
t
PLH
PHL
V
OH
V
V
M
Bn, An output
M
V
OL
mna176
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 5. Input to output propagation delays
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
8 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
V
I
OE input
V
M
GND
t
t
PZL
PLZ
V
CC
output
LOW-to-OFF
OFF-to-LOW
V
M
V
X
V
OL
t
t
PHZ
PZH
V
OH
V
Y
output
HIGH-to-OFF
OFF-to-HIGH
V
M
GND
outputs
enabled
outputs
enabled
outputs
disabled
mna367
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 6. Enable and disable times
Table 8.
Type
Measurement points
Input
Output
VM
VM
VX
VY
74VHC245
0.5VCC
1.5 V
0.5VCC
0.5VCC
VOL + 0.3 V
VOL + 0.3 V
V
OH − 0.3 V
74VHCT245
VOH − 0.3 V
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
9 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
t
W
V
I
90 %
negative
pulse
V
V
V
M
M
10 %
0 V
t
t
r
f
t
t
f
r
V
I
90 %
positive
pulse
V
M
M
10 %
0 V
t
W
V
CC
V
CC
V
V
O
I
R
L
S1
G
open
DUT
R
T
C
L
001aad983
Test data is given in Table 9.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch.
Fig 7. Load circuitry for measuring switching times
Table 9.
Type
Test data
Input
Load
S1 position
tPHL, tPLH
open
VI
tr, tf
CL
RL
tPZH, tPHZ
GND
tPZL, tPLZ
VCC
74VHC245
VCC
3.0 V
≤ 3.0 ns
≤ 3.0 ns
15 pF, 50 pF
15 pF, 50 pF
1 kΩ
1 kΩ
74VHCT245
open
GND
VCC
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
10 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
11. Package outline
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
D
E
A
X
c
y
H
E
v
M
A
Z
20
11
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
1
10
w
detail X
e
M
b
p
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
max.
(1)
(1)
(1)
UNIT
mm
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
θ
1
2
3
p
E
p
Z
0.3
0.1
2.45
2.25
0.49
0.36
0.32
0.23
13.0
12.6
7.6
7.4
10.65
10.00
1.1
0.4
1.1
1.0
0.9
0.4
2.65
0.1
0.25
0.01
1.27
0.05
1.4
0.25 0.25
0.1
8o
0o
0.012 0.096
0.004 0.089
0.019 0.013 0.51
0.014 0.009 0.49
0.30
0.29
0.419
0.394
0.043 0.043
0.016 0.039
0.035
0.016
inches
0.055
0.01 0.01 0.004
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-19
SOT163-1
075E04
MS-013
Fig 8. Package outline SOT163-1 (SO20)
74VHC_VHCT245_1
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
11 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm
SOT360-1
D
E
A
X
c
H
v
M
A
y
E
Z
11
20
Q
A
2
(A )
3
A
A
1
pin 1 index
θ
L
p
L
1
10
detail X
w
M
b
p
e
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(2)
(1)
UNIT
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
Z
θ
1
2
3
p
E
p
max.
8o
0o
0.15
0.05
0.95
0.80
0.30
0.19
0.2
0.1
6.6
6.4
4.5
4.3
6.6
6.2
0.75
0.50
0.4
0.3
0.5
0.2
mm
1.1
0.65
0.25
1
0.2
0.13
0.1
Notes
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
99-12-27
03-02-19
SOT360-1
MO-153
Fig 9. Package outline SOT360-1 (TSSOP20)
74VHC_VHCT245_1
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
12 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;
20 terminals; body 2.5 x 4.5 x 0.85 mm
SOT764-1
B
A
D
A
A
1
E
c
detail X
terminal 1
index area
C
terminal 1
index area
e
1
y
y
e
b
v
M
C
C
A
B
C
1
w
M
2
9
L
1
10
E
h
e
20
11
19
12
D
h
X
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
(1)
A
(1)
(1)
UNIT
A
b
c
E
e
e
1
y
D
D
E
L
v
w
y
1
1
h
h
max.
0.05 0.30
0.00 0.18
4.6
4.4
3.15
2.85
2.6
2.4
1.15
0.85
0.5
0.3
mm
0.05
0.1
1
0.2
0.5
3.5
0.1
0.05
Note
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
02-10-17
03-01-27
SOT764-1
- - -
MO-241
- - -
Fig 10. Package outline SOT764-1 (DHVQFN20)
74VHC_VHCT245_1
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
13 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
12. Abbreviations
Table 10. Abbreviations
Acronym
CDM
CMOS
DUT
Description
Charged Device Model
Complementary Metal-Oxide Semiconductor
Device Under Test
ESD
ElectroStatic Discharge
Human Body Model
HBM
MM
Machine Model
TTL
Transistor-Transistor Logic
13. Revision history
Table 11. Revision history
Document ID
Release date
20090825
Data sheet status
Change notice
Supersedes
74VHC_VHCT245_1
Product data sheet
-
-
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
14 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
14. Legal information
14.1 Data sheet status
Document status[1][2]
Product status[3]
Development
Definition
Objective [short] data sheet
This document contains data from the objective specification for product development.
This document contains data from the preliminary specification.
This document contains the product specification.
Preliminary [short] data sheet Qualification
Product [short] data sheet Production
[1]
[2]
[3]
Please consult the most recently issued document before initiating or completing a design.
The term ‘short data sheet’ is explained in section “Definitions”.
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nexperia.com.
damage. Nexperia accepts no liability for inclusion and/or use of
Nexperia products in such equipment or applications and
14.2 Definitions
therefore such inclusion and/or use is at the customer’s own risk.
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Nexperia does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Terms and conditions of sale — Nexperia products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.nexperia.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by Nexperia. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
14.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable.However,Nexperiadoesnotgiveanyrepresentationsor
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
Right to make changes — Nexperiareservestherighttomake
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from national authorities.
Suitability for use — Nexperia products are not designed,
14.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of a Nexperia product can reasonably be expected
to result in personal injury, death or severe property or environmental
15. Contact information
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
©
74VHC_VHCT245_1
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 01 — 25 August 2009
15 of 16
74VHC245; 74VHCT245
Nexperia
Octal bus transceiver; 3-state
16. Contents
1
2
3
4
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information. . . . . . . . . . . . . . . . . . . . . 1
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5
5.1
5.2
Pinning information. . . . . . . . . . . . . . . . . . . . . . 3
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
6
Functional description . . . . . . . . . . . . . . . . . . . 4
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4
Recommended operating conditions. . . . . . . . 5
Static characteristics. . . . . . . . . . . . . . . . . . . . . 5
Dynamic characteristics . . . . . . . . . . . . . . . . . . 7
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 11
Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 14
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 14
7
8
9
10
10.1
11
12
13
14
Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
14.1
14.2
14.3
14.4
15
16
Contact information. . . . . . . . . . . . . . . . . . . . . 15
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
© Nexperia B.V. 2017. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 25 August 2009
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FAIRCHILD
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