74LVT2245; 74LVTH2245
3.3 V octal transceiver with 30
Ω
termination resistors; 3-state
Rev. 04 — 24 April 2006
Product data sheet
1. General description
The 74LVT2245; 74LVTH2245 is a high-performance BiCMOS product designed for V
CC
operation at 3.3 V.
This device is an octal transceiver featuring non-inverting 3-state bus compatible outputs
in both send and receive directions. The control function implementation minimizes
external timing requirements. The device features an output enable input (OE) for easy
cascading and a direction input (DIR) for direction control.
The 74LVT2245; 74LVTH2245 is designed with 30
Ω
series resistance in both the
HIGH-state and LOW-state of the output. This design reduces line noise in applications
such as memory address drivers, clock drivers and bus transceivers and transmitters.
2. Features
30
Ω
output termination resistors
Octal bidirectional bus interface
3-state buffers
Output capability: +12 mA and
−12
mA
TTL input and output switching levels
Input and output interface capability to systems at 5 V supply
Bus hold data inputs eliminate need for external pull-up resistors to hold unused inputs
Live insertion and extraction permitted
Power-up 3-state
No bus current loading when output is tied to 5 V bus
Latch-up protection:
N
JESD78: exceeds 500 mA
I
ESD protection:
N
MIL STD 883 method 3015: exceeds 2000 V
N
Machine model: exceeds 200 V
I
I
I
I
I
I
I
I
I
I
I
Philips Semiconductors
74LVT2245; 74LVTH2245
3.3 V octal transceiver with 30
Ω
termination resistors; 3-state
3. Quick reference data
Table 1.
Quick reference data
GND = 0 V; T
amb
= 25
°
C.
Symbol Parameter
t
PLH
t
PHL
C
i
C
io
I
CC
LOW-to-HIGH propagation
delay An to Bn or Bn to An
Conditions
C
L
= 50 pF; V
CC
= 3.3 V
Min
-
-
-
-
-
Typ
3.2
3.1
4
10
0.13
Max
-
-
-
-
-
Unit
ns
ns
pF
pF
mA
HIGH-to-LOW propagation C
L
= 50 pF; V
CC
= 3.3 V
delay An to Bn or Bn to An
input capacitance pins DIR V
I
= 0 V or 3.0 V
and OE
input/output capacitance
pins An and Bn
quiescent supply current
outputs disabled;
V
I/O
= 0 V or 3.0 V
outputs disabled;
V
CC
= 3.6 V
4. Ordering information
Table 2.
Ordering information
Package
Temperature range Name
74LVT2245D
74LVT2245DB
74LVT2245PW
74LVTH2245D
74LVTH2245DB
74LVTH2245PW
−40 °C
to +85
°C
−40 °C
to +85
°C
−40 °C
to +85
°C
−40 °C
to +85
°C
−40 °C
to +85
°C
−40 °C
to +85
°C
SO20
SSOP20
TSSOP20
SO20
SSOP20
TSSOP20
Description
plastic small outline package; 20 leads;
body width 7.5 mm
plastic shrink small outline package; 20 leads;
body width 5.3 mm
Version
SOT163-1
SOT339-1
Type number
plastic thin shrink small outline package; 20 leads; SOT360-1
body width 4.4 mm
plastic small outline package; 20 leads;
body width 7.5 mm
plastic shrink small outline package; 20 leads;
body width 5.3 mm
SOT163-1
SOT339-1
plastic thin shrink small outline package; 20 leads; SOT360-1
body width 4.4 mm
74LVT_LVTH2245_4
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 — 24 April 2006
2 of 15
Philips Semiconductors
74LVT2245; 74LVTH2245
3.3 V octal transceiver with 30
Ω
termination resistors; 3-state
5. Functional diagram
1
19
A0
2
18
A1
3
17
A2
4
16
A3
5
15
A4
6
14
A5
7
13
A6
8
12
A7
9
11
B7
B6
B5
B4
B3
B2
3
4
5
6
7
8
9
mna818
DIR
OE
19
G3
3 EN1 (BA)
B0
1
3 EN2 (AB)
B1
2
1
2
18
17
16
15
14
13
12
11
mna817
Fig 1. Logic symbol
Fig 2. IEC logic symbol
V
CC
V
CC
25
Ω
25
Ω
mna819
Fig 3.
Schematic of one output
74LVT_LVTH2245_4
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 — 24 April 2006
3 of 15
Philips Semiconductors
74LVT2245; 74LVTH2245
3.3 V octal transceiver with 30
Ω
termination resistors; 3-state
6. Pinning information
6.1 Pinning
74LVT2245
74LVTH2245
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
13 B5
12 B6
11 B7
001aae465
GND 10
Fig 4. Pin configuration
6.2 Pin description
Table 3.
Symbol
DIR
A0
A1
A2
A3
A4
A5
A6
A7
GND
B7
B6
B5
B4
B3
B2
B1
B0
OE
V
CC
74LVT_LVTH2245_4
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Description
direction control input
data input/output A0
data input/output A1
data input/output A2
data input/output A3
data input/output A4
data input/output A5
data input/output A6
data input/output A7
ground (0 V)
data input/output B7
data input/output B6
data input/output B5
data input/output B4
data input/output B3
data input/output B2
data input/output B1
data input/output B0
output enable input
supply voltage
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 — 24 April 2006
4 of 15
Philips Semiconductors
74LVT2245; 74LVTH2245
3.3 V octal transceiver with 30
Ω
termination resistors; 3-state
7. Functional description
7.1 Function table
Table 4.
Control
OEn
L
H
[1]
Function table
[1]
Input/output
DIR
L
H
X
An
output An = Bn
input
Z
Bn
input
output Bn = An
Z
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
8. Limiting values
Table 5.
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
V
O
I
IK
I
OK
I
O
T
stg
T
j
[1]
[2]
Parameter
supply voltage
input voltage
output voltage
input clamping current
output clamping current
output current
storage temperature
junction temperature
Conditions
[1]
Min
−0.5
−0.5
−0.5
-
-
-
-
−65
[2]
Max
+4.6
+7.0
+7.0
−50
−50
128
−64
+150
150
Unit
V
V
V
mA
mA
mA
mA
°C
°C
output in OFF-state or
HIGH-state
V
I
< 0 V
V
O
< 0 V
output in LOW-state
output in HIGH-state
[1]
-
The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings
are observed.
The performance capability of a high-performance integrated circuit in conjunction with its thermal
environment can create junction temperatures which are detrimental to reliability.
9. Recommended operating conditions
Table 6.
Symbol
V
CC
V
I
V
IH
V
IL
I
OH
74LVT_LVTH2245_4
Recommended operating conditions
Parameter
supply voltage
input voltage
HIGH-state input voltage
LOW-state input voltage
HIGH-state output current
Conditions
Min
2.7
0
2.0
-
-
Typ
-
-
-
-
-
Max
3.6
5.5
-
0.8
−12
Unit
V
V
V
V
mA
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 — 24 April 2006
5 of 15
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