SGS Thomson Microelectronics 74LCXHR162245TTR Datasheet
LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER
WITH 5V TOLERANT INPUTS AND OUTPUT (3-STATE)
■ 5V TOLERANT INPUTS AND OUTPUTS
■ HIGH SPEED:
t
= 4.7 ns (MAX.) at VCC=3V
PD
■ POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
|=IOL= 12mA (MIN) at VCC=3V
OH
■ PCI BUS LEVELS GUARANTEED AT 12 mA
■ BALANCED PROPAGATION DELAYS:
t
≅ t
PLH
PHL
■ OPERATING VOLTAGE RANGE:
V
(OPR) = 2.0V to 3.6V (1.5V Data
CC
Retention)
■ BUSHOLDPROVIDEDONBOTHSIDES
■ PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16245
■ LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17)
■ ESD PERFORMANCE:
HBM > 2 000V (MIL STD 883 method 3015);
MM > 200V
74LCXHR162245
TSSOP
ORDER CODES
PACKAGE TUBE T & R
TSSOP 74LCXHR162245TTR
PIN CONNECTION
DESCRIPTION
The 74LCXHR162245 is a low voltage CMOS 16
BIT BUS TRANSCEIVER (3-STATE) fabricated
with sub-micron silicon gate and double-layer
metal wiring C
2
MOS technology. It is ideal for low
power and high speed 3.3V applications; it can be
interfaced to 5Vsignalenvironmentfor both inputs
and outputs.
This IC is intended f or two-way asynchronous
communication between data buses; the direc tion
of data transm ission is determined by DIR input.
The t wo enable inputs nG
canbeusedtodisable
the device so that the buses are ef fectively isolated.
Bus hold on data inputs is provided in order to
eliminate the need for exte rnal pull-up or
pull-down resistor.
All outputs, which are designed to sink up t o
12mA, include 26
Ω res istors to reduce overshoot
and undershoot.
All inputs and outputs are equipped with prot ec tion circuits against static discharge, giving them
2KV ESD immunity and tr ans ient excess voltage.
1/10July 2003
74LCXHR162245
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
1 1DIR Directional Control
2, 3, 5, 6, 8, 9,
11, 12
13,14,16,17,
19, 20, 22, 23
24 2DIR Directional Control
25 2G
36,35,33,32,
30, 29, 27, 26
47,46,44,43,
41, 40, 38, 38
48 1G
4, 10, 15, 21,
28, 34, 39, 45
7, 18, 31, 42
1B1 to 1B8 Data Inputs/Outputs
2B1 to 2B8 Data Inputs/Outputs
Output Enable Input
2A1 to 2A8 Data Inputs/Outputs
1A1 to 1A8 Data Inputs/Outputs
Output Enable Input
GND Ground (0V)
V
CC
Positive Supply Voltage
TRUTH TABLE
INPUTS FUNCTION OUTPUT
G
L L OUTPUT INPUT A = B
L H INPUT OUTPUT B = A
HXZZZ
X :Don‘t Care
Z : High Impedance
DIR A BUS B BUS Yn
IEC L OGIC SYMBOLS
2/10
74LCXHR162245
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
V
I
I
OK
I
I
CC
I
GND
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
1) I
absolute maximum rating must be observed
O
2) VO<GND
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
V
V
I
OH,IOL
I
OH,IOL
T
dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V
1) Truth Table guaranteed: 1.5V to 3.6V
from0.8V to2Vat VCC=3.0V
2) V
IN
Supply Voltage
CC
DC Input Voltage (DIR, G)
I
Bus I/O Voltage (OFF State)
I/O
Bus I/O Voltage (High or Low State) (note 1) -0.5 to VCC+ 0.5
I/O
DC Input Diode Current
IK
DC Output Diode Current (note 2)
DC Output Current
O
DC Supply Current per Supply Pin
DC Ground Current per Supply Pin
Storage Temperature
stg
Lead Temperature (10 sec)
L
Supply Voltage (note 1)
CC
Input Voltage
I
Output Voltage (OFF State)
O
Output Voltage (High or Low State) 0 to V
O
High or Low Level Output Current (VCC= 3.0 to 3.6V)
High or Low Level Output Current (VCC= 2.7V)
Operating Temperature
op
-0.5 to +7.0 V
-0.5 to +7.0 V
-0.5 to +7.0 V
V
-50 mA
-50 mA
± 50 mA
± 100 mA
± 100 mA
-65 to +150 °C
300 °C
2.0 to 3.6 V
0 to 5.5 V
0 to 5.5 V
CC
V
± 12 mA
± 8mA
-55 to 125 °C
3/10
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