ETC 74LCX16541TTR

74LCX16541
LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE)
WITH 5V TOLERANT INPUTS/OUTPUTS (NON INVERTED)
■
■
■
■
■
■
■
■
■
■
■
5V TOLERANT INPUTS AND OUTPUTS
HIGH SPEED:
tPD = 4.1 ns (MAX.) at VCC = 5V
LOW POWER DISSIPATION:
ICC = 2 µA (MAX.) at TA=25°C
HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
POWER DOWN PROTECTION ON INPUTS
AND OUPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 24 mA (MIN)
BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL
OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 3.6V (1.5V Data Retention)
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16541
IMPROVED LATCH-UP IMMUNITY
ESD PERFORMANCE:
HBM>2000V(MIL STD 883 method 3015);
MM>200V
TSSOP
ORDER CODES
PACKAGE
TSSOP
TUBE
T&R
74LCX16541TTR
PIN CONNECTION
DESCRIPTION
The 74LCX16541 is an advanced high-speed
CMOS 16-BIT BUS BUFFER (3-STATE) fabricated with sub-micron silicon gate and double-layer
metal wiring C2MOS tecnology.
This is composed of two 8-bit sections with
separate output-enable signals. For either 8-bit
buffers section, the 3 STATE control gate
operates as a two input AND such that if either
nG1 and nG2 are high, all outputs are in the high
impedence state. This device is designed to be
used with 3 state memory address driveres, etc.
It hase same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power consumption.
All inputs and outputs are equipped with protection circuits against static discharge, giving them
2KV ESD immunity and transient excess voltage.
October 2002
1/8
74LCX16541
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1, 48
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, 37
4, 10, 15, 21,
28, 34, 39, 45
7, 18, 31, 42
SYMBOL
IEC LOGIC SYMBOLS
NAME AND FUNCTION
1G1, 1G2 Output Enable Inputs
1Y1 to 1Y8 Data Outputs
2Y1 to 2Y8 Data Outputs
2G1, 2G2 Output Enable Inputs
2A1 to 2A8 Data Outputs
1A1 to 1A8 Data Outputs
GND
Ground (0V)
VCC
Positive Supply Voltage
TRUTH TABLE
INPUTS
G1
G2
An
Yn
H
X
L
L
X
H
L
L
X
X
H
L
Z
Z
H
L
X : Don’t Care
Z : High Impedance
2/8
OUTPUT
74LCX16541
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Parameter
Value
Unit
Supply Voltage
-0.5 to +7.0
V
VI
DC Input Voltage
-0.5 to +7.0
V
VO
DC Output Voltage
-0.5 to +7.0
V
VO
DC Output Voltage (High or Low State) (note 1)
-0.5 to Vcc+0.5
V
IIK
DC Input Diode Current
−50
mA
IOK
DC Output Diode Current (note 2)
− 50
mA
IO
DC Output Current
+ 50
mA
ICC or IGND DC V CC or Ground Current
Tstg
Storage Temperature
TL
Lead Temperature (10 sec)
± 100
mA
-65 to +150
°C
300
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
1) Io absolute maximum rating must be observed
2)Vo < GND
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
Value
Unit
Supply Voltage (note 1)
Parameter
2 to 3.6
V
0 to 5.5
V
VI
Input Voltage
VO
Output Voltage (OFF State)
0 to 5.5
V
VO
Output Voltage (High or Low State)
0 to Vcc
V
Top
Operating Temperature
-55 to 125
°C
± 24
mA
High or Low Level Output Current (Vcc = 2.7V)
± 12
mA
Input Rise and Fall Time (note 2)
0 to 10
IOH, I OL
High or Low Level Output Current (Vcc = 3.0 to 3.6V)
IOH, I OL
dt/dv
ns/V
1) Truth Table guaranteed: 1.5V to 3.6V
2) VIN from0.8V to 2V at VCC=3.0V
3/8
74LCX16541
DC SPECIFICATIONS
Test Condi tion
Symbol
VIH
VIL
VOH
VOL
IOZ
II
Ioff
ICC
Parameter
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
Low Level Output
Voltage
High Impedance
Output Leakage
Current
Input Leakage
Current
Power Off Leakage
Current
Quiescent Supply
Current
Value
-40 to 85 °C
VCC
(V)
Min.
-55 to 125 °C
Max.
Min.
2.0
Unit
Max.
2.0
V
2.7 to 3.6
0.8
0.8
V
2.7 to 3.6
IO=-100 µA
VCC-0.2
VCC-0.2
2.7
I O=-12 mA
2.2
2.2
3.0
I O=-12 mA
2.4
2.4
3.0
I O=-24 mA
2.2
2.2
2.7 to 3.6
IO=100 µA
2.7
IO=12 mA
0.4
0.4
3.0
IO=24 mA
0.55
0.55
2.7 to 3.6
V I = 0 to 5.5V
±5
±5
µA
2.7 to 3.6
V I = 0 to 5.5V
±5
±5
µA
0
VI or VO = 5.5V
10
10
µA
2.7 to 3.6
V I = VCC or GND
20
20
µA
0.2
V
0.2
V
AC ELECTRICAL CHARACTERISTICS ( CL = 50 pF, RL = 500 Ω, Input tr = tf = 2.5ns)
Test Condi tion
Symbol
Parameter
tPLH tPHL Propagation Delay
Time
A to Y
tPZL tPZH Output Enable Time
tPLZ tPHZ Output Disable Time
4/8
VCC
(V)
CL
(pF)
Value
-40 to 85°C
-55 to 125°C
Min.
Max.
Min.
Max.
2.7
1.5
4.7
1.5
4.7
3.0 to 3.6
1.5
4.1
1.5
4.1
2.7
3.0 to 3.6
2.7
3.0 to 3.6
1.5
1.5
1.5
1.5
5.8
4.6
6.2
5.8
1.5
1.5
1.5
1.5
5.8
4.6
6.2
5.8
Unit
ns
ns
ns
74LCX16541
CAPACITIVE CHARACTERISTICS
Test Conditio n
Symbol
C IN
C OUT
CPD
Parameter
TA = 25 °C
VCC
(V)
Input Capacitance
Value
Min.
Typ.
Unit
Max.
3.3
VI = 0V or VCC
4
pF
Output Capacitance
3.3
VI = 0V or VCC
10
pF
Power Dissipation Capacitance
(note 1) Output enabled
2.5
fIN = 10MHz
VI = 0V or VCC
45
50
pF
fIN = 10MHz
VI = 0V or VCC
3
4
pF
Power Dissipation Capacitance
(note 1) Output disabled
3.3
2.5
3.3
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/ 16
TEST CIRCUIT
TEST
SWITCH
tPLH, tPHL
Open
tPZL, tPLZ
2V CC
tPZH, tPHZ
GND
CL = 50 pF or equivalent (includes jig and probe capacitance)
RL = R1 = 500 Ω or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
5/8
74LCX16541
WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle; VY= VOH-03V,
VX= VOL+0.3V)
6/8
74LCX16541
TSSOP48 MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
MAX.
A
MIN.
TYP.
1.2
A1
0.05
0.047
0.15
A2
MAX.
0.002
0.006
0.9
0.035
b
0.17
0.27
0.0067
0.011
c
0.09
0.20
0.0035
0.0079
D
12.4
12.6
0.408
0.496
E
8.1 BSC
E1
6.0
0.318 BSC
6.2
e
0.236
0.5 BSC
0.244
0.0197 BSC
K
0°
8°
0°
8°
L
0.50
0.75
0.020
0.030
A
A2
A1
b
K
e
L
E
c
D
E1
PIN 1 IDENTIFICATION
1
7065588C
7/8
74LCX16541
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 result from
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
 2002 STMicroelectronics - Printed in Italy - All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco
Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.
 http://www.st.com
8/8