74ALVC245
Octal bus transceiver; 3-state
Rev. 02 — 7 January 2008
Product data sheet
1. General description
The 74ALVC245 is an octal transceiver featuring non-inverting 3-state bus compatible
outputs in both send and receive directions. The 74ALVC245 features an output enable
input (OE) for easy cascading and send/receive input (DIR) for direction control. OE
controls the outputs, so that the buses are effectively isolated.
2. Features
s
Wide supply voltage range from 1.65 V to 3.6 V
s
Complies with JEDEC standard:
x
JESD8-7 (1.65 V to 1.95 V)
x
JESD8-5 (2.3 V to 2.5 V)
x
JESD8B/JESD36 (2.7 V to 3.6 V)
s
3.6 V tolerant inputs/outputs
s
CMOS low-power consumption
s
Direct interface with TTL levels (2.7 V to 3.6 V)
s
Power-down mode
s
Latch-up performance exceeds 250 mA
s
ESD protection:
x
HBM JESD22-A114E exceeds 2000 V
x
MM JESD22-A115-A exceeds 200 V
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74ALVC245D
74ALVC245PW
74ALVC245BQ
−40 °C
to +85
°C
−40 °C
to +85
°C
−40 °C
to +85
°C
Name
SO20
TSSOP20
DHVQFN20
Description
plastic small outline package; 20 leads;
body width 7.5 mm
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
Version
SOT163-1
SOT360-1
Type number
plastic dual in-line compatible thermal enhanced
SOT764-1
very thin quad flat package; no leads; 20 terminals;
body 2.5
×
4.5
×
0.85 mm
NXP Semiconductors
74ALVC245
Octal bus transceiver; 3-state
4. Functional diagram
1
DIR
OE
19
2
A0
B0
18
3
A1
B1
17
19
B2
16
1
G3
3EN1
3EN2
4
A2
5
A3
B3
15
2
B4
14
3
4
B5
13
5
6
B6
12
7
8
B7
11
9
1
2
18
17
16
15
14
13
12
11
mna175
6
A4
7
A5
8
A6
9
A7
mna174
Fig 1. Logic symbol
Fig 2. IEC logic symbol
74ALVC245_2
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 7 January 2008
2 of 14
NXP Semiconductors
74ALVC245
Octal bus transceiver; 3-state
5. Pinning information
5.1 Pinning
terminal 1
index area
A0
A1
DIR
A0
A1
A2
A3
A4
A5
A6
A7
1
2
3
4
5
6
7
8
9
20 V
CC
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
GND 10
12 B6
11 B7
001aac431
2
3
4
5
20 V
CC
19 OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
B7 11
A2
A3
A4
A5
A6
A7
6
7
8
9
GND
(1)
245
13 B5
1
DIR
245
GND 10
001aac432
Transparent top view
(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
A[0:7]
B[0:7]
GND
OE
V
CC
Pin description
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
18, 17, 16, 15, 14, 13, 12,
11
10
19
20
Description
direction control
data input/output
data input/output
ground (0 V)
output enable input (active LOW)
supply voltage
6. Functional description
Table 3.
Input
OE
L
L
H
[1]
Function table
[1]
Input/output
DIR
L
H
X
An
A=B
input
Z
Bn
input
B=A
Z
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
74ALVC245_2
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 7 January 2008
3 of 14
NXP Semiconductors
74ALVC245
Octal bus transceiver; 3-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
V
CC
V
I
I
IK
I
OK
V
O
Parameter
supply voltage
input voltage
input clamping current
output clamping current
output voltage
V
I
< 0 V
V
O
> V
CC
or V
O
< 0 V
output HIGH or LOW state
output 3-state
power-down mode, V
CC
= 0 V
I
O
I
CC
I
GND
T
stg
P
tot
output current
supply current
ground current
storage temperature
total power dissipation
T
amb
=
−40 °C
to +85
°C
SO20 package
TSSOP20 package
DHVQFN20 package
[1]
[2]
[3]
[4]
[5]
[6]
The minimum input voltage ratings may be exceeded if the input current ratings are observed.
The output voltage ratings may be exceeded if the output current ratings are observed.
When V
CC
= 0 V (Power-down mode), the output voltage can be 3.6 V in normal operation.
P
tot
derates linearly with 8 mW/K above 70
°C.
P
tot
derates linearly with 5.5 mW/K above 60
°C.
P
tot
derates linearly with 4.5 mW/K above 60
°C.
[4]
[5]
[6]
[2]
[2]
[3]
[1]
Conditions
Min
−0.5
−0.5
−50
-
−0.5
−0.5
−0.5
-
-
−100
−65
-
-
-
Max
+4.6
+4.6
-
±50
+4.6
+4.6
±50
100
-
+150
500
500
500
Unit
V
V
mA
mA
V
V
mA
mA
mA
°C
mW
mW
mW
V
CC
+ 0.5 V
V
O
= 0 V to V
CC
8. Recommended operating conditions
Table 5.
Symbol
V
CC
V
I
V
O
Recommended operating conditions
Parameter
supply voltage
input voltage
output voltage
output HIGH or LOW state
output 3-state
power-down mode, V
CC
= 0 V
T
amb
∆t/∆V
ambient temperature
input transition rise and fall rate
V
CC
= 1.65 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
Conditions
Min
1.65
0
0
0
0
−40
-
-
Max
3.6
3.6
V
CC
3.6
3.6
+85
20
10
Unit
V
V
V
V
V
°C
ns/V
ns/V
74ALVC245_2
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 7 January 2008
4 of 14
NXP Semiconductors
74ALVC245
Octal bus transceiver; 3-state
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
IH
HIGH-level input voltage
Conditions
Min
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
V
IL
LOW-level input voltage
V
CC
= 1.65 V to 1.95 V
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
V
OH
HIGH-level output voltage V
I
= V
IH
or V
IL
I
O
= 100
µA;
V
CC
= 1.65 V to 3.6 V
I
O
= 6 mA; V
CC
= 1.65 V
I
O
= 12 mA; V
CC
= 2.3 V
I
O
= 18 mA; V
CC
= 2.3 V
I
O
= 12 mA; V
CC
= 2.7 V
I
O
= 18 mA; V
CC
= 3.0 V
I
O
= 24 mA; V
CC
= 3.0 V
V
OL
LOW-level output voltage
V
I
= V
IH
or V
IL
I
O
=
−100 µA;
V
CC
= 1.65 V to 3.6 V
I
O
=
−6
mA; V
CC
= 1.65 V
I
O
=
−12
mA; V
CC
= 2.3 V
I
O
=
−18
mA; V
CC
= 2.3 V
I
O
=
−12
mA; V
CC
= 2.7 V
I
O
=
−18
mA; V
CC
= 3.0 V
I
O
=
−24
mA; V
CC
= 3.0 V
I
OZ
I
I
I
OFF
I
CC
∆I
CC
C
I
C
I/O
[1]
[2]
−40 °C
to +85
°C
Typ
[1]
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
±0.1
±0.1
±0.1
0.2
5
3.5
3.5
Max
-
-
-
0.7
0.8
-
-
-
-
-
-
-
0.2
0.3
0.4
0.6
0.4
0.4
0.55
±10.0
±5.0
±10.0
10
750
-
-
0.65
×
V
CC
1.7
2.0
-
-
-
V
CC
−
0.2
1.25
1.8
1.7
2.2
2.4
2.2
-
-
-
-
-
-
-
[2]
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
µA
µA
µA
µA
µA
pF
pF
0.35
×
V
CC
V
OFF-state output current
input leakage current
supply current
additional supply current
input capacitance
input/output capacitance
V
I
= V
IH
or V
IL
; V
O
= V
CC
or GND;
V
CC
= 3.6 V
V
I
= V
CC
or GND; V
CC
= 3.6 V
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 3.6 V
per input pin; V
CC
= 3.0 V to 3.6 V;
V
I
= V
CC
−
0.6 V; I
O
= 0 A;
-
-
-
-
-
-
-
power-off leakage current V
I
or V
O
= 0 V to 3.6 V; V
CC
= 0 V
All typical values are measured at V
CC
= 3.3 V and T
amb
= 25
°C.
For transceivers, the parameter I
OZ
includes the input leakage current.
74ALVC245_2
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 7 January 2008
5 of 14
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