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Lógica y traducción de voltaje
Búferes, controladores y transceptores
Transceptores de uso general

SN74HC623

ACTIVO

Transceptores de bus octal con salidas de 3 estados

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SN74HC623

ACTIVO
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Detalles del producto

Number of channels 8 IOL (max) (mA) 7.8 IOH (max) (mA) -7.8 Input type CMOS Output type CMOS Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Technology family HC Rating Catalog Operating temperature range (°C) -40 to 85
Number of channels 8 IOL (max) (mA) 7.8 IOH (max) (mA) -7.8 Input type CMOS Output type CMOS Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Technology family HC Rating Catalog Operating temperature range (°C) -40 to 85
SOP (NS) 20 98.28 mm² (12.6 mm × 7.8 mm) SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm) PDIP (N) 20 228.702 mm² (24.33 mm × 9.4 mm)
  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current 3-State Outputs Can Drive Up To 15 LSTTL Loads
  • Low Power Consumption, 80-µA Max ICC
  • Typical tpd = 8 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max
  • Lock Bus-Latch Capability
  • True Logic
  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current 3-State Outputs Can Drive Up To 15 LSTTL Loads
  • Low Power Consumption, 80-µA Max ICC
  • Typical tpd = 8 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max
  • Lock Bus-Latch Capability
  • True Logic

These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation allows for maximum flexibility in timing.

The ’HC623 devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic levels at the output-enable (OEAB and OEBA\) inputs.

OEAB and OEBA\ disable the device so that the buses are effectively isolated. The dual-enable configuration gives the transceivers the capability to store data by simultaneously enabling OEAB and OEBA\. Each output reinforces its input in this transceiver configuration. When both OEAB and OEBA\ are enabled and all other data sources to the two sets of bus lines are in the high-impedance state, both sets of bus lines (16 total) remain at their last states. The 8-bit codes appearing on the two sets of buses are identical.

These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation allows for maximum flexibility in timing.

The ’HC623 devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic levels at the output-enable (OEAB and OEBA\) inputs.

OEAB and OEBA\ disable the device so that the buses are effectively isolated. The dual-enable configuration gives the transceivers the capability to store data by simultaneously enabling OEAB and OEBA\. Each output reinforces its input in this transceiver configuration. When both OEAB and OEBA\ are enabled and all other data sources to the two sets of bus lines are in the high-impedance state, both sets of bus lines (16 total) remain at their last states. The 8-bit codes appearing on the two sets of buses are identical.
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* Hoja de datos SN54HC623, SN74HC623 datasheet (Rev. C) 13/12/2002

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