DatasheetsPDF.com

M74HC7640 Dataheets PDF



Part Number M74HC7640
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description OCTAL BUS TRANSCEIVER
Datasheet M74HC7640 DatasheetM74HC7640 Datasheet (PDF)

M54HC7245/7640/7643/7645 M74HC7245/7640/7643/7645 OCTAL BUS TRANSCEIVER (3-STATE): HC7645 NON INVERTING HC7640 INVERTING , HC7643 INVERTING/NON INVERTING . . . . . . . . HIGH SPEED tPD = 12 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION o ICC = 4 µA (MAX.) at TA = 25 C HIGH NOISE IMMUNITY VH = 1.1 (TYP.) at VCC = 5V OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE |IOH| = IOL = 6 mA (MIN) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING RANGE VCC (OPR) = 2V to 6V PIN AND .

  M74HC7640   M74HC7640



Document
M54HC7245/7640/7643/7645 M74HC7245/7640/7643/7645 OCTAL BUS TRANSCEIVER (3-STATE): HC7645 NON INVERTING HC7640 INVERTING , HC7643 INVERTING/NON INVERTING . . . . . . . . HIGH SPEED tPD = 12 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION o ICC = 4 µA (MAX.) at TA = 25 C HIGH NOISE IMMUNITY VH = 1.1 (TYP.) at VCC = 5V OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE |IOH| = IOL = 6 mA (MIN) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING RANGE VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 54/74LS245/640/643 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCXXXXF1R M74HCXXXXM1R M74HCXXXXB1R M74HCXXXXC1R DESCRIPTION The M54/74HC7245 HC7640, HC7643 and HC7645 utilise silicon gate C2MOS technology to achive operating speeds equivalent to LSTTL devices. Along with the low power dissipation and high noise 2 immunity of standads C MOS integrated circuit, it possesses the capability to drive 15 LSTTL loads. These IC’s are intended for two-way asynchronous communication between data buses, and the direction of data trasmission is determined by DIR input. The enable input (G) can be used to disable the device so that the buses are effectively isolated. The HC7245/640/7643/7645 have the same pin PIN CONNECTION (top view) HC7640 HC7643 HC7645/HC7245 configuration and function as the HC245/640/643 and they have a hysteresis characteristics with each input, so HC7245/7640/7643/7645 can be used as a line receiver, etc. All input are equipped with protection circuits against static discharge and transient excess voltage. IT IS PROHIBITED TO APPLY A SIGNAL TO A BUS TERMINAL WHEN IT IS IN OUTPUT MODE AND WHEN A BUS THERMINAL IS FLOATING (HIGH IMPEDANCE STATE), IT IS REQUESTED TO FIX THE INPUT LEVEL BY MEANS OF EXTERNAL PULL DOWN OR PULL UP RESISTOR. HC7245 is electrically and funcutionally the same as the HC7645 January 1994 1/10 M54/M74HC7245/7640/7643/7645 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1 2, 3, 4, 5, 6, 7, 8, 9 18, 17, 16, 15, 14, 13, 12, 11 19 10 20 SYMBOL DIR A1 to A8 B1 to B8 NAME AND FUNCTION Directional Control Data Inputs/Outputs Data Inputs/Outputs G GND VCC Output Enabel Input (Active LOW) Ground (0V) Positive Supply Voltage IEC LOGIC SYMBOLS HC7640 HC7643 HC7645 TRUTH TABLE INPUT G L L H X: ”H” or ”L” Z: High impedance FUNCTION DIR L H X A BUS OUTPUT INPUT Z B BUS INPUT OUTPUT Z HC7640 A=B B=A Z OUTPUT HC7643 A=B B=A Z HC7645/7245 A=B B=A Z 2/10 M54/M74HC7245/ 7640/7643/7645 ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO ICC or IGND PD Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Source Sink Current Per Output Pin DC VCC or Ground Current Power Dissipation Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 20 ± 20 ± 35 ± 70 500 (*) -65 to +150 300 Unit V V V mA mA mA mA mW o o C C Absolute .


M74HC76 M74HC7640 M74HC7643


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)