M74HC640| Datasheet

M74HC640, M74HC640B1R

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M74HC640
OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (INVERTING)
s

HIGH SPEED: tPD = 10ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4uA(MAX.) at TA=25 C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 6mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 640

DIP

SOP

TSSOP

ORDER CODES
PACKAGE DIP SOP TSSOP TUBE M74HC640B1R M74HC640M1R T&R M74HC640RM13TR M74HC640TTR

DESCRIPTION The 74HC640 is an advanced high-speed CMOS OCTAL BUS TRANSCEIVER (3-STATE) fabricated with silicon gate C2MOS technology. This IC is intended for two-way asynchronous communication between data buses, and the direction of data transmission is determined by

DIR input. The enable input G can be used to disable the device so that the buses are effectively isolated. All inputs are equipped with protection circuits against static discharge and transient excess voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

August 2001

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