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74LCX16541
LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE) WITH 5V TOLERANT INPUTS/OUTPUTS (NON INVERTED)
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5V TOLERANT INPUTS AND OUTPUTS HIGH SPEED: tPD = 4.1 ns (MAX.) at VCC = 5V LOW POWER DISSIPATION: ICC = 2 A (MAX.) at TA=25C 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.
February 2003
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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 NAME AND FUNCTION
IEC LOGIC SYMBOLS
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 VCC Ground (0V) Positive Supply Voltage
TRUTH TABLE
INPUTS G1 H X L L
X : Don't Care Z : High Impedance
OUTPUT An X X H L Yn Z Z H L
G2 X H L L
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74LCX16541
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VI VO VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage DC Output Voltage (High or Low State) (note 1) DC Input Diode Current DC Output Diode Current (note 2) DC Output Current Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to +7.0 -0.5 to Vcc+0.5 -50 - 50 + 50 100 -65 to +150 300 Unit V V V V mA mA mA mA C C
ICC or IGND DC VCC or Ground Current Storage Temperature Tstg TL Lead Temperature (10 sec)
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 VI VO VO Top IOH, IOL IOH, IOL dt/dv Supply Voltage (note 1) Input Voltage Output Voltage (OFF State) Output Voltage (High or Low State) Operating Temperature High or Low Level Output Current (Vcc = 3.0 to 3.6V) High or Low Level Output Current (Vcc = 2.7V) Input Rise and Fall Time (note 2) Parameter Value 2 to 3.6 0 to 5.5 0 to 5.5 0 to Vcc -55 to 125 24 12 0 to 10 Unit V V V V C mA mA ns/V
1) Truth Table guaranteed: 1.5V to 3.6V 2) VIN from0.8V to 2V at VCC=3.0V
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74LCX16541
DC SPECIFICATIONS
Test Condition Symbol Parameter VCC (V) -40 to 85 C Min. 2.0 2.7 to 3.6 0.8 2.7 to 3.6 2.7 3.0 3.0 VOL Low Level Output Voltage 2.7 to 3.6 2.7 3.0 IOZ High Impedance Output Leakage Current Input Leakage Current Power Off Leakage Current Quiescent Supply Current 2.7 to 3.6 IO=-100 A IO=-12 mA IO=-12 mA IO=-24 mA IO=100 A IO=12 mA IO=24 mA VI = 0 to 5.5V VCC-0.2 2.2 2.4 2.2 0.2 0.4 0.55 5 5 10 20 VCC-0.2 2.2 2.4 2.2 0.2 0.4 0.55 5 5 10 20 A A A A V V 0.8 V Max. Value -55 to 125 C Min. 2.0 Max. V Unit
VIH VIL VOH
High Level Input Voltage Low Level Input Voltage High Level Output Voltage
II Ioff ICC
2.7 to 3.6 0 2.7 to 3.6
VI = 0 to 5.5V VI or VO = 5.5V VI = VCC or GND
AC ELECTRICAL CHARACTERISTICS ( C L = 50 pF, RL = 500 , Input tr = tf = 2.5ns)
Test Condition Symbol Parameter VCC (V) 2.7 3.0 to 3.6 2.7 3.0 to 3.6 2.7 3.0 to 3.6 CL (pF) -40 to 85C Min. 1.5 1.5 1.5 1.5 1.5 1.5 Max. 4.7 4.1 5.8 4.6 6.2 5.8 Value -55 to 125C Min. 1.5 1.5 1.5 1.5 1.5 1.5 Max. 4.7 4.1 5.8 4.6 6.2 5.8 ns ns ns Unit
tPLH tPHL Propagation Delay Time A to Y tPZL tPZH Output Enable Time tPLZ tPHZ Output Disable Time
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74LCX16541
CAPACITIVE CHARACTERISTICS
Test Condition Symbol Parameter VCC (V) 3.3 3.3 2.5 3.3 2.5 3.3 VI = 0V or VCC VI = 0V or VCC fIN = 10MHz VI = 0V or VCC fIN = 10MHz VI = 0V or VCC Value TA = 25 C Min. Typ. 4 10 45 50 3 4 Max. pF pF pF pF Unit
CIN COUT CPD
Input Capacitance Output Capacitance Power Dissipation Capacitance (note 1) Output enabled Power Dissipation Capacitance (note 1) Output disabled
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 tPLH, tPHL tPZL, tPLZ tPZH, tPHZ
CL = 50 pF or equivalent (includes jig and probe capacitance) RL = R1 = 500 or equivalent RT = ZOUT of pulse generator (typically 50)
SWITCH Open 2VCC GND
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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)
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74LCX16541
TSSOP48 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.50 6.0 0.5 BSC 8 0.75 0 0.020 0.17 0.09 12.4 8.1 BSC 6.2 0.236 0.0197 BSC 8 0.030 0.05 0.9 0.27 0.20 12.6 0.0067 0.0035 0.488 0.318 BSC 0.244 TYP MAX. 1.2 0.15 0.002 0.035 0.011 0.0079 0.496 MIN. TYP. MAX. 0.047 0.006 inch
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
7065588C
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74LCX16541
Tape & Reel TSSOP48 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 8.7 13.1 1.5 3.9 11.9 12.8 20.2 60 30.4 8.9 13.3 1.7 4.1 12.1 0.343 0.516 0.059 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 1.197 0.350 0.524 0.067 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch
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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. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2003 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. (c) http://www.st.com
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