SGS Thomson Microelectronics 74AC16245TTR Datasheet
WITH 3-STATE OUTPUTS (NON INVERTED)
■ HIGH SPEED:
t
= 4.5 ns (TYP.) at VCC=5V
PD
■ LOW POWER DISSIPATION:
I
=4µA (MAX.) at TA=25°C
CC
■ HIGH NOISE IMMUNITY:
V
NIH=VNIL
■ POWER DOWN PROTECTION ON INPUTS
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
|=IOL=24mA(MIN)
OH
■ BALANCED PROPAGAT ION DE LAYS:
t
≅ t
PLH
■ OPERATING VOLTAGE RANGE:
V
(OPR) = 2V to 6V
CC
■ PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16245
■ IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74AC16245 is an advanced high-speed
CMOS 16-BIT BUS TRANSCEIVER (3-STATE)
fabricated with sub-micron silicon gate and double-layer metal wiring C
This IC is intended for two -wa y asynch ronous
communication between data busses; the
direction of data transmission is determined by
DIR input. The enable input G
disable the device so that the busses are
effectively isolated.
All inputs and outputs are equipped with protection circuits against static discharge, giving them
2KV ESD immunity and t r ans ient excess voltage.
All floating bus terminals during High Z State must
be held HIGH or LOW.
= 28% VCC(MIN.)
PHL
2
MOS technology.
canbeusedto
74AC16245
16-BIT BUS TRANSCEIVER
TSSOP
ORDER CODES
PACKAGE TUBE T & R
TSSOP 74AC16245TTR
PIN CONNECTION
1/9July 2003
74AC16245
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
2/9
74AC16245
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
I
I
OK
I
or I
I
CC
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
V
T
dt/dv
1) VINfrom30% to 70% of V
Supply Voltage
CC
DC Input Voltage
I
DC Output Voltage -0.5 to VCC+ 0.5
O
DC Input Diode Current
IK
DC Output Diode Current
DC Output Current
O
DC VCCor Ground Current
GND
Storage Temperature
stg
Lead Temperature (10 sec)
L
Supply Voltage
CC
Input Voltage 0 to V
I
Output Voltage 0 to V
O
Operating Temperature
op
Input Rise and Fall Time (note 1) V
CC
= 3.0, 4.5 or 5.5
CC
-0.5 to +7.0 V
-0.5 to +7.0 V
± 20 mA
± 20 mA
± 25 mA
± 200 mA
-65 to +150 °C
300 °C
2to6 V
CC
CC
-55 to 125 °C
0 to 8 ns/V
V
V
V
3/9
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