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. 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