74LVC32245A
32-bit bus transceiver with direction pin; 5 V tolerant; 3-state
Rev. 2 — 8 November 2011
Product data sheet
1. General description
The 74LVC32245A is a 32-bit transceiver featuring non-inverting 3-state bus compatible
outputs in both send and receive directions. The device features four output enable (nOE)
inputs for easy cascading and four send/receive (nDIR) inputs for direction control.
Pin nOE controls the outputs so that the buses are effectively isolated.
Inputs can be driven from either 3.3 V or 5 V devices. When disabled, up to 5.5 V can be
applied to the outputs. These features allow the use of these devices in mixed
3.3 V and 5 V applications.
To ensure the high-impedance state during power-up or power-down, pin nOE should be
tied to V
CC
through a pull-up resistor; the minimum value of the resistor is determined by
the current-sinking capability of the driver.
2. Features and benefits
5 V tolerant inputs/outputs for interfacing with 5 V logic
Wide supply voltage range from 2.3 V to 3.6 V
CMOS low power consumption
MULTIBYTE flow-through standard pin-out architecture
Low inductance multiple power and ground pins for minimum noise and ground
bounce
Direct interface with TTL levels
Inputs accept voltages up to 5.5 V
High-impedance when V
CC
= 0 V
Complies with JEDEC standard:
JESD8-7A (1.65 V to 1.95 V)
JESD8-5A (2.3 V to 2.7 V)
JESD8-C/JESD36 (2.7 V to 3.6 V)
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115B exceeds 200 V
CDM JESD22-C101E exceeds 1000 V
Specified from
40 C
to +85
C
and
40 C
to +125
C
Packaged in plastic fine-pitch ball grid array package
NXP Semiconductors
74LVC32245A
32-bit bus transceiver with direction pin; 5 V tolerant; 3-state
5. Pinning information
5.1 Pinning
mna475
6
5
4
3
2
1
1A1
1A0
1A3
1A2
1A5
1A4
1A7
1A6
2A1
2A0
2A3
2A2
2A5
2A4
2A6
2A7
3A1
3A0
3A3
3A2
3A5
3A4
3A7
3A6
4A1
4A0
4A3
4A2
4A5
4A4
4A6
4A7
1OE GND VCC GND GND VCC GND 2OE 3OE GND VCC GND GND VCC GND 4OE
1DIR GND VCC GND GND VCC GND 2DIR 3DIR GND VCC GND GND VCC GND 4DIR
1B0
1B1
A
1B2
1B3
B
1B4
1B5
C
1B6
1B7
D
2B0
2B1
E
2B2
2B3
F
2B4
2B5
G
2B7
2B6
H
3B0
3B1
J
3B2
3B3
K
3B4
3B5
L
3B6
3B7
M
4B0
4B1
N
4B2
4B3
P
4B4
4B5
R
4B7
4B6
T
Fig 2.
Pin configuration
5.2 Pin description
Table 2.
Symbol
nDIR (n = 1 to 4)
nOE (n = 1 to 4)
1A[0:7]
1B[0:7]
2A[0:7]
2B[0:7]
3A[0:7]
3B[0:7]
4A[0:7]
4B[0:7]
GND
V
CC
Pin description
Ball
A3, H3, J3, T3
A4, H4, J4, T4
A5, A6, B5, B6, C5, C6, D5, D6
A2, A1, B2, B1, C2, C1, D2, D1
E5, E6, F5, F6, G5, G6, H6, H5
E2, E1, F2, F1, G2, G1, H1, H2
J5, J6, K5, K6, L5, L6, M5, M6
J2, J1, K2, K1, L2, L1, M2, M1
N5, N6, P5, P6, R5, R6, T6, T5
N2, N1, P2, P1, R2, R1, T1, T2
Description
direction control
output enable input (active LOW)
input or output
input or output
input or output
input or output
input or output
input or output
input or output
input or output
B3, B4, D3, D4, E3, E4, G3, G4, K3, K4, ground (0 V)
M3, M4, N3, N4, R3, R4
C3, C4, F3, F4, L3, L4, P3, P4
supply voltage
6. Functional description
Table 3.
Input
nOE
L
L
H
[1]
Function selection
[1]
Output
nDIR
L
H
X
nAn
nAn = nBn
inputs
Z
nBn
inputs
nBn = nAn
Z
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
74LVC32245A
Product data sheet
Rev. 2 — 8 November 2011
4 of 14
NXP Semiconductors
74LVC32245A
32-bit bus transceiver with direction pin; 5 V tolerant; 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
I
IK
V
I
I
OK
V
O
I
O
I
CC
I
GND
T
stg
P
tot
[1]
[2]
[3]
[4]
Parameter
supply voltage
input clamping current
input voltage
output clamping current
output voltage
output current
supply current
ground current
storage temperature
total power dissipation
Conditions
V
I
< 0 V
[1]
Min
0.5
50
0.5
-
[2]
[2]
Max
+6.5
-
+6.5
50
V
CC
+ 0.5
+6.5
50
200
-
+150
1000
Unit
V
mA
V
mA
V
V
mA
mA
mA
C
mW
V
O
> V
CC
or V
O
< 0 V
output HIGH or LOW state
output 3-state
V
O
= 0 V to V
CC
[3]
[3]
0.5
0.5
-
-
200
65
-
T
amb
=
40 C
to +125
C
[4]
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.
All supply and ground pins connected externally to one voltage source.
Above 70
C
the value of P
tot
derates linearly with 1.8 mW/K.
8. Recommended operating conditions
Table 5.
Symbol
V
CC
V
I
V
O
T
amb
t/V
Recommended operating conditions
Parameter
supply voltage
functional
input voltage
output voltage
ambient temperature
input transition rise and fall rate
output HIGH or LOW state
output 3-state
in free air
V
CC
= 2.3 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
Conditions
Min
1.65
1.2
0
0
0
40
-
-
Typ
-
-
-
-
-
-
-
-
Max
3.6
-
5.5
V
CC
5.5
+125
20
10
Unit
V
V
V
V
V
C
ns/V
ns/V
74LVC32245A
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 8 November 2011
5 of 14