54VCXHR162245
Rad hard low voltage CMOS 16-bit bus buffer transceiver
(3-state) with 3.6 V tolerant inputs and outputs
Features
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1.65 to 3.6 V inputs and outputs
High speed in both A, B outputs:
– t
PD
= 3.4 ns at V
CC
= 3.0 to 3.6 V
– t
PD
= 4.3 ns at V
CC
= 2.3 to 2.7 V
Symmetrical impedance outputs:
– |I
OH
| = I
OL
= 12 mA (Min.) at V
CC
= 3.0 V
– |I
OH
| = I
OL
= 8 mA (Min.) at V
CC
= 2.3 V
Power down protection on inputs and outputs
26
Ω
serie resistors in bith A and B port outputs
Operating voltage range:
– V
CC
(Opr) = 1.65 V to 3.6 V
Pin and function compatible with 54 series
HR162245
Bus hold provided on both sides
Cold spare function
Latch-up performance exceeds
300 mA (JESD 17)
ESD performance:
– HBM > 2000 V
(MIL STD 883 method 3015); MM > 200 V
300 krad Mil1019.6 condition A, (RHA QML
qualification extension undergone)
No SEL, no SEU and no SET under 110
Mev/cm2/mg LET heavy ions irradiation
QML qualified product
Device fully compliant with
DSCC SMD 5962-05213
100 mV typical input hysteresis
The upper metallic lid is not electrically connected to any
pins, nor to the IC die inside the package.
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Flat-48
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Description
The 54VCXHR162245 is a low voltage CMOS 16
bit bus transceiver (3-state) fabricated with sub-
micron silicon gate and five-layer metal wiring
C²MOS technology. It is ideal for low power and
very high speed 1.65 to 3.6 V applications; it can
be interfaced to 3.6 V signal environment for both
inputs and outputs. This IC is intended for two-
way asynchronous communication between data
buses; the direction of data transmission is
determined by DIR input. The two enable inputs
nG can be used to disable the device so that the
buses are effectively isolated. The device circuits
is including 26
Ω
series resistance in the A and B
port outputs. These resistors permit to reduce line
noise in high speed applications. Bus hold on
data inputs is provided in order to eliminate the
need for external pull-up or pull-down resistor. All
inputs and outputs are equipped with protection
circuits against static discharge, giving them 2 kV
ESD immunity and transient excess voltage. All
floating bus terminals during high Z State must be
held HIGH or LOW.
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August 2011
Doc ID 10651 Rev 8
1/18
www.st.com
18
Contents
54VCXHR162245
Contents
1
2
Logic symbols and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1
2.2
2.3
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4
5
6
7
8
9
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2/18
Doc ID 10651 Rev 8
54VCXHR162245
Pin settings
2.2
Pin description
Table 1.
Pin description
Pin n°
1
2, 3, 5, 6, 8, 9, 11, 12
13, 14, 16, 17, 19, 20, 22, 23
24
25
36, 35, 33, 32, 30, 29, 27, 26
47, 46, 44, 43, 41, 40, 38, 38
48
4, 10, 15, 21, 28, 34, 39, 45
7, 18, 31, 42
Symbol
1DIR
1B1 to 1B8
2B1 to 2B8
2DIR
2G
2A1 to 2A8
1A1 to 1A8
1G
GND
V
CC
Name and function
Directional control
Data inputs/outputs
Data inputs/outputs
Directional control
Output enable input
Data inputs/outputs
Data inputs/outputs
Output enable input
Ground (0 V)
Positive supply voltage
2.3
Truth table
Table 2.
Truth table
Inputs
G
L
L
H
DIR
L
H
X
A bus
OUTPUT
INPUT
Z
Function
B bus
INPUT
OUTPUT
Z
Output
Yn
A=B
B=A
Z
Note:
X = Do not care; Z = High impedance
Doc ID 10651 Rev 8
5/18
Microcontroller MCU
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