74LCX16245TTR [STMICROELECTRONICS]
LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER WITH 5V TOLERANT INPUTS AND OUTPUT (3-STATE); 具有5V容限输入和输出低电压CMOS 16位总线收发器（ 3 -STATE ）
| 型号： | 74LCX16245TTR |
| 厂家： | 
ST |
| 描述： | LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER WITH 5V TOLERANT INPUTS AND OUTPUT (3-STATE) |
| 文件： | 总9页 (文件大小：73K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74LCX16245
LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER
WITH 5V TOLERANT INPUTS AND OUTPUT (3-STATE)
■
■
5V TOLERANT INPUTS AND OUTPUTS
HIGH SPEED :
t
= 4.5 ns (MAX.) at V = 3V
PD
CC
■
■
POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I | = I = 24mA (MIN) at V = 3V
TSSOP
TUBE
OH
OL
CC
■
■
PCI BUS LEVELS GUARANTEED AT 24 mA
BALANCED PROPAGATION DELAYS:
t
t
PHL
ORDER CODES
PACKAGE
PLH
■
OPERATING VOLTAGE RANGE:
(OPR) = 2.0V to 3.6V (1.5V Data
T & R
V
CC
TSSOP
74LCX16245TTR
Retention)
■
■
■
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16245
LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17)
PIN CONNECTION
ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
DESCRIPTION
The 74LCX16245 is a low voltage CMOS 16 BIT
BUS TRANSCEIVER (3-STATE) fabricated with
sub-micron silicon gate and double-layer metal
2
wiring C MOS technology. It is ideal for low power
and high speed 3.3V applications; it can be
interfaced to 5V 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 isolat-
ed.
It has same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power con-
sumption.
All inputs and outputs are equipped with protec-
tion circuits against static discharge, giving them
2KV ESD immunity and transient excess voltage.
All floating bus terminals during High Z State must
be held HIGH or LOW.
September 2001
1/9
74LCX16245
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
IEC LOGIC SYMBOLS
PIN No
SYMBOL
NAME AND FUNCTION
1
1DIR
Directional Control
2, 3, 5, 6, 8, 9, 1B1 to 1B8 Data Inputs/Outputs
11, 12
13, 14, 16, 17, 2B1 to 2B8 Data Inputs/Outputs
19, 20, 22, 23
24
25
2DIR
2G
Directional Control
Output Enable Input
36, 35, 33, 32, 2A1 to 2A8 Data Inputs/Outputs
30, 29, 27, 26
47, 46, 44, 43, 1A1 to 1A8 Data Inputs/Outputs
41, 40, 38, 38
48
1G
Output Enable Input
4, 10, 15, 21,
28, 34, 39, 45
GND
Ground (0V)
V
7, 18, 31, 42
Positive Supply Voltage
CC
TRUTH TABLE
INPUTS
FUNCTION
A BUS B BUS
OUTPUT INPUT
OUTPUT
Yn
G
DIR
L
L
L
H
X
A = B
B = A
Z
INPUT
Z
OUTPUT
Z
H
X : Don‘t Care
Z : High Impedance
2/9
74LCX16245
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
Supply Voltage
-0.5 to +7.0
-0.5 to +7.0
-0.5 to +7.0
V
V
V
CC
V
DC Input Voltage (DIR, G)
I
V
V
I
Bus I/O Voltage (OFF State)
Bus I/O Voltage (High or Low State) (note 1)
DC Input Diode Current
I/O
I/O
IK
-0.5 to V
+ 0.5
V
CC
- 50
mA
mA
mA
mA
mA
°C
I
DC Output Diode Current (note 2)
DC Output Current
- 50
± 50
OK
I
O
I
DC Supply Current per Supply Pin
DC Ground Current per Supply Pin
Storage Temperature
± 100
CC
I
± 100
GND
T
-65 to +150
300
stg
T
Lead Temperature (10 sec)
°C
L
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) V < GND
O
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
Supply Voltage (note 1)
Input Voltage
2.0 to 3.6
0 to 5.5
0 to 5.5
V
V
CC
V
I
V
Output Voltage (OFF State)
V
O
V
Output Voltage (High or Low State)
0 to V
V
O
CC
I
I
, I
High or Low Level Output Current (V = 3.0 to 3.6V)
± 24
± 12
mA
mA
°C
ns/V
OH OL
CC
, I
High or Low Level Output Current (V = 2.7V)
OH OL
CC
T
Operating Temperature
-55 to 125
0 to 10
op
dt/dv
Input Rise and Fall Time (note 2)
1) Truth Table guaranteed: 1.5V to 3.6V
2) V from 0.8V to 2V at V = 3.0V
IN
CC
3/9
74LCX16245
DC SPECIFICATIONS
Test Condition
Value
Symbol
Parameter
-40 to 85 °C
Min. Max.
-55 to 125 °C
Unit
V
(V)
CC
Min.
Max.
V
High Level Input
Voltage
IH
2.0
2.0
V
V
2.7 to 3.6
V
Low Level Input
Voltage
IL
0.8
0.8
V
High Level Output
Voltage
I =-100 µA
V
-0.2
V
-0.2
CC
2.7 to 3.6
2.7
OH
O
CC
I =-12 mA
2.2
2.4
2.2
2.2
O
V
V
I =-18 mA
2.4
2.2
O
3.0
I =-24 mA
O
V
Low Level Output
Voltage
I =100 µA
2.7 to 3.6
2.7
0.2
0.4
0.2
0.4
OL
O
I =12 mA
O
I =16 mA
0.4
0.4
O
3.0
I =24 mA
0.55
0.55
O
I
Input Leakage
Current
I
V = 0 to 5.5V
2.7 to 3.6
0
± 5
± 5
µA
µA
I
I
Power Off Leakage
Current
off
V or V = 5.5V
10
10
I
O
I
I
High Impedance
Output Leakage
Current
OZ
CC
V = V or V
I
IH
IL
2.7 to 3.6
± 5
± 5
µA
V
= 0 to V
O
CC
Quiescent Supply
Current
V = V or GND
I CC
20
20
2.7 to 3.6
2.7 to 3.6
µA
µA
V or V = 3.6 to 5.5V
± 20
500
± 20
500
I
O
∆I
I
incr. per Input
V
= V - 0.6V
CC
CC
IH
CC
DYNAMIC SWITCHING CHARACTERISTICS
Test Condition
Value
T
= 25 °C
Symbol
Parameter
Unit
A
V
CC
(V)
Min.
Typ.
Max.
V
Dynamic Low Level Quiet
Output (note 1)
0.8
C = 50pF
OLP
L
3.3
V
V
= 0V, V = 3.3V
V
-0.8
IL
IH
OLV
1) Number of outputs defined as ”n”. Measured with ”n-1” outputs switching from HIGH to LOW or LOW to HIGH. The remaining output is
measured in the LOW state.
4/9
74LCX16245
AC ELECTRICAL CHARACTERISTICS
Test Condition
Value
-55 to 125 °C
Symbol
Parameter
-40 to 85 °C
Unit
V
C
R
t = t
CC
L
L
s
r
(V)
(pF)
(Ω)
500
500
(ns)
Min.
Max.
Min.
Max.
t
t
t
t
Propagation Delay
Time
2.7
1.5
1.5
1.5
1.5
1.5
1.5
5.2
4.5
7.2
6.5
6.9
6.4
1.0
1.5
1.5
1.5
1.5
1.5
1.5
5.2
4.5
7.2
6.5
6.9
6.4
1.0
PLH PHL
50
2.5
ns
ns
3.0 to 3.6
2.7
t
Output Enable Time
PZL PZH
50
2.5
3.0 to 3.6
2.7
t
Output Disable Time
PLZ PHZ
50
50
500
500
2.5
2.5
ns
ns
3.0 to 3.6
3.0 to 3.6
t
t
Output To Output
Skew Time (note1,
2)
OSLH
OSHL
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-
ing in the same direction, either HIGH or LOW (t
2) Parameter guaranteed by design
= | t
- t
|, t
= | t
- t
|)
OSLH
PLHm PLHn OSHL
PHLm PHLn
CAPACITIVE CHARACTERISTICS
Test Condition
Value
T
= 25 °C
Symbol
Parameter
Unit
A
V
CC
(V)
Min.
Typ.
Max.
C
Input Capacitance
Output Capacitance
V
V
= 0 to V
3.3
7
pF
pF
IN
IN
IN
CC
C
= 0 to V
3.3
3.3
8
OUT
CC
C
Power Dissipation Capacitance
(note 1)
f
= 10MHz
20
PD
IN
IN
pF
V
= 0 or V
CC
1) C is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
PD
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
circuit)
= C x V x f + I /16 (per
CC(opr)
PD CC IN CC
5/9
74LCX16245
TEST CIRCUIT
TEST
SWITCH
t
t
t
, t
Open
6V
PLH PHL
, t
PZL PLZ
, t
GND
PZH PHZ
C
R
R
= 50 pF or equivalent (includes jig and probe capacitance)
L
L
T
= R1 = 500Ω or equivalent
= Z
of pulse generator (typically 50Ω)
OUT
WAVEFORM 1 : PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
6/9
74LCX16245
WAVEFORM 2 : OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
7/9
74LCX16245
TSSOP48 MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
MAX.
1.1
MIN.
TYP.
MAX.
0.043
0.006
A
A1
A2
b
0.05
0.15
0.002
0.9
0.035
0.17
0.09
12.4
7.95
6.0
0.27
0.20
12.6
8.25
6.2
0.0067
0.0035
0.408
0.313
0.236
0.011
0.0079
0.496
0.325
0.244
c
D
E
E1
e
0.5 BSC
0.0197 BSC
K
0°
8°
0°
8°
L
0.50
0.75
0.020
0.030
A2
A
K
L
b
e
A1
E
c
D
E1
PIN 1 IDENTIFICATION
1
7065588A
8/9
74LCX16245
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may resultfrom
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
2001 STMicroelectronics - Printed in Italy - All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco
Singapore - Spain - Sweden - Switzerland - United Kingdom
http://www.st.com
9/9
相关型号：
74LCX16245_07
Low voltage CMOS 16-bit bus transceiver (3-state) with 5V tolerant inputs and outputs
STMICROELECTR
74LCX162841MEA
LVC/LCX/Z SERIES, DUAL 10-BIT DRIVER, TRUE OUTPUT, PDSO56, 0.300 INCH, PLASTIC, SSOP-56
TI
74LCX162841MEAX
LVC/LCX/Z SERIES, DUAL 10-BIT DRIVER, TRUE OUTPUT, PDSO56, 0.300 INCH, PLASTIC, SSOP-56
TI
74LCX162841MTD
LVC/LCX/Z SERIES, DUAL 10-BIT DRIVER, TRUE OUTPUT, PDSO56, 6.10 MM, PLASTIC, TSSOP-56
TI
74LCX16373
LOW VOLTAGE CMOS 16-BIT D-TYPE LATCH(3-STATE)WITH 5V TOLERANT INPUTS AND OUTPUTS
STMICROELECTR
©2020 ICPDF网 联系我们和版权申明