Part # 74LCX646 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Low volt. CMOS octal bus transceiver register with 5 volt tolerant inputs and outputs (3-state)

Part Details:

74LCX646 LOW VOLT. CMOS OCTAL BUS TRANSCEIVER/REGISTER WITH 5 VOLT TOLERANT INPUTS AND OUTPUTS(3-STATE) s 5V TOLERANT INPUTS AND OUTPUTS s HIGH SPEED:tPD = 7.0 ns (MAX.) at VCC = 3V s POWER DOWN PROTECTION ON INPUTS AND OUTPUTS s SYMMETRICAL OUTPUT IMPEDANCE: SOP TSSOP |IOH| = IOL = 24mA (MIN) at VCC = 3V s PCI BUS LEVELS GUARANTEED AT 24 mA Table 1: Order Codes s BALANCED PROPAGATION DELAYS:tPLH tPHL PACKAGE T & R s OPERATING VOLTAGE RANGE:V SOP 74LCX646RM13TR CC(OPR) = 2.0V to 3.6V (1.5V Data Retention) TSSOP 74LCX646TTR s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 646 This device consists of bus transceiver circuits s LATCH-UP PERFORMANCE EXCEEDS with 3 state, D-type flip-flops, and control circuitry 500mA (JESD 17) arranged for multiplexed transmission of datadirectly from the input bus or from the internal s ESD PERFORMANCE: HBM > 2000V (MIL STD 883 method 3015); registers. Data on the A or B bus will be clocked MM > 200V into register on the low to high transition of theappropriate clock pin (Clock AB or Clock BA).Enable (G) and direction (DIR) pins are provided DESCRIPTION to control the transceiver functions. In the The 74LCX646 is a low voltage CMOS OCTAL transceiver mode, data present at the BUS TRANSCEIVER AND REGISTER high-impedance port may be stored in either (3-STATE) fabricated with sub-micron silicon gate register or in both. The select controls (Select AB and double-layer metal wiring C2MOS technology. select BA) can multiplex stored and real time It is ideal for low power and high speed 3.3V (transparent mode) data. The direction control

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74LCX646.pdf Datasheet