74AC16245 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS (NON INVERTED) ■ ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 4.5 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4 µA (MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) POWER DOWN PROTECTION ON INPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 16245 IMPROVED LATCH-UP IMMUNITY TSSOP ORDER CODES PACKAGE TSSOP TUBE T&R 74AC16245TTR PIN CONNECTION 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 C2MOS technology. This IC is intended for two-way asynchronous communication between data busses; the direction of data transmission is determined by DIR input. The enable input G can be used to 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 transient excess voltage. All floating bus terminals during High Z State must be held HIGH or LOW. July 2003 1/9 74AC16245 INPUT AND OUTPUT EQUIVALENT CIRCUIT IEC LOGIC SYMBOLS PIN DESCRIPTION PIN No SYMBOL 1 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, 38 48 4, 10, 15, 21, 28, 34, 39, 45 NAME AND FUNCTION 1DIR Directional Control 1B1 to 1B8 Data Inputs/Outputs 2B1 to 2B8 Data Inputs/Outputs 2DIR Directional Control 2G Output Enable Input 2A1 to 2A8 Data Inputs/Outputs 1A1 to 1A8 Data Inputs/Outputs 1G 7, 18, 31, 42 Output Enable Input GND Ground (0V) VCC Positive Supply Voltage TRUTH TABLE INPUTS FUNCTION G DIR L L H L H X X : Don’t Care Z : High Impedance 2/9 A BUS B BUS OUTPUT INPUT INPUT OUTPUT Z Z OUTPUT Yn A=B B=A Z 74AC16245 ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Supply Voltage VI DC Input Voltage VO DC Output Voltage IIK Value Unit -0.5 to +7.0 V -0.5 to +7.0 V -0.5 to VCC + 0.5 V DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output Current ICC or IGND DC VCC or Ground Current Tstg Storage Temperature TL Lead Temperature (10 sec) ± 25 mA ± 200 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 RECOMMENDED OPERATING CONDITIONS Symbol VCC Parameter Supply Voltage Value Unit 2 to 6 V VI Input Voltage 0 to VCC V VO Output Voltage 0 to VCC V Top Operating Temperature dt/dv Input Rise and Fall Time (note 1) VCC = 3.0, 4.5 or 5.5 -55 to 125 0 to 8 °C ns/V 1) VIN from 30% to 70% of VCC 3/9 74AC16245 DC SPECIFICATIONS Test Condition Symbol VIH VIL VOH VOL II IOZ ICC Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Input Leakage Current High Impedance Output Leakage Current Quiescent Supply Current Value TA = 25 °C VCC (V) 3.0 4.5 5.5 3.0 4.5 5.5 VO = 0.1 V or VCC-0.1V Min. Typ. 2.1 3.15 3.85 1.5 2.25 2.75 1.5 2.25 2.75 VO = 0.1 V or VCC-0.1V Max. -40 to 85°C -55 to 125°C Min. Min. Max. 2.1 3.15 3.85 0.9 1.35 1.65 Max. 2.1 3.15 3.85 0.9 1.35 1.65 Unit V 0.9 1.35 1.65 V 3.0 IO=-50 µA 2.9 2.99 2.9 2.9 4.5 IO=-50 µA 4.4 4.49 4.4 4.4 5.5 IO=-50 µA 5.4 5.49 5.4 5.4 3.0 IO=-12 mA 2.56 2.46 2.46 4.5 IO=-24 mA 3.86 3.76 3.76 5.5 IO=-24 mA 4.86 3.0 IO=50 µA 0.002 0.1 0.1 0.1 4.5 IO=50 µA 0.001 0.1 0.1 0.1 5.5 IO=50 µA 0.001 0.1 0.1 0.1 3.0 IO=12 mA 0.36 0.44 0.44 4.5 IO=24 mA 0.36 0.44 0.44 5.5 VI = VCC or GND ± 0.1 ±1 ±1 µA 5.5 VI = VIH or VIL VO = VCC or GND ± 0.5 ±5 ±5 µA 5.5 VI = VCC or GND 4 40 40 µA 4.76 V 4.76 V AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns) Test Condition Symbol Parameter tPLH tPHL Propagation Delay Time tPZL tPZH Output Enable Time tPLZ tPHZ Output Disable Time (*) Voltage range is 3.3V ± 0.3V (**) Voltage range is 5.0V ± 0.5V 4/9 VCC (V) CL (pF) Value TA = 25°C -55 to 125°C Min. Min. Typ. Max. 3.3(*) 6 6.3 8.5 9.0 5.0(**) 4.5 5.0 6.5 7.5 3.3(*) 8 8.5 11.0 12.0 5.0(**) 5.5 6.0 7.0 8.0 3.3(*) 7.5 8.0 9.3 10.0 (**) 5.7 6.0 7.0 8.0 5.0 Min. -40 to 85°C Max. Unit Max. ns ns ns 74AC16245 CAPACITIVE CHARACTERISTICS Test Condition Symbol Parameter CIN Input Capacitance CI/O Input Output Capacitance Power Dissipation Capacitance (note 1) CPD TA = 25°C VCC (V) 5.0 Value Min. fIN = 10MHz Typ. Max. 7 10 -40 to 85°C -55 to 125°C Min. Min. Max. Unit Max. 10 10 pF 14 pF 25 pF 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(per Latch) TEST CIRCUIT TEST SWITCH tPLH, tPHL Open tPZL, tPLZ tPZH, tPHZ 2VCC GND CL = 50 pF or equivalent (includes jig and probe capacitance) RL = R1 = 1KΩ or equivalent RT = ZOUT of pulse generator (typically 50Ω) 5/9 74AC16245 WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 6/9 74AC16245 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 0.488 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 7/9 74AC16245 Tape & Reel TSSOP48 MECHANICAL DATA mm. inch DIM. MIN. A MAX. MIN. 330 13.2 TYP. MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 8/9 TYP 0.504 30.4 0.519 1.197 Ao 8.7 8.9 0.343 0.350 Bo 13.1 13.3 0.516 0.524 Ko 1.5 1.7 0.059 0.067 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.476 74AC16245 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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