74ABTH16646

Features: Independent registers for A and B busesMultiple VCC and GND pins minimize switching noiseLive insertion/extraction permittedPowerup 3-StatePowerup resetMultiplexed real-time and stored dataOutputs sink 64mA and source 32mALatchup protection exceeds 500mA per JEDEC Std 1774ABTH16646 incor...

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SeekIC No. : 004248805 Detail

74ABTH16646: Features: Independent registers for A and B busesMultiple VCC and GND pins minimize switching noiseLive insertion/extraction permittedPowerup 3-StatePowerup resetMultiplexed real-time and stored dat...

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Part Number:
74ABTH16646
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/21

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Product Details

Description



Features:

Independent registers for A and B buses
Multiple VCC and GND pins minimize switching noise
Live insertion/extraction permitted
Powerup 3-State
Powerup reset
Multiplexed real-time and stored data
Outputs sink 64mA and source 32mA
Latchup protection exceeds 500mA per JEDEC Std 17
74ABTH16646 incorporates bus-hold data inputs which eliminate
   the need for external pull-up resistors to hold unused inputs
ESD protection exceeds 2000V per MIL STD 883 Method 3015
   and 200V per Machine Model



Pinout

  Connection Diagram


Specifications

SYMBOL PARAMETER CONDITIONS RATING UNIT
VCC DC supply voltage   0.5 to +7.0 V
IIK DC input diode current VI < 0
18 mA
VI
DC input voltage3
  1.2 to +7.0 V
IOK DC output diode current VO < 0
50 mA
VOUT
DC output voltage3
output in Off or High state 0.5 to +5.5 V
IOUT DC output current output in Low state 128 mA
output in High state 64 mA
Tstg Storage temperature range   65 to 150



Description

The 74ABTH16646 highperformance BiCMOS device combines low Bstatic  and dynamic power dissipation with high speed and high output drive.

The 74ABTH16646 16-bit transceiver/register consists of two sets of bus transceiver circuits with 3-State outputs, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes High. Output Enable (nOE) and Direction (nDIR) pins are provided to control the transceiver function. In the transceiver mode, data present at the high impedance port may be stored in either the A or B register or both.

The select (nSAB, nSBA) pins of the 74ABTH16646 determine whether data is stored or transferred through the device in real-time. The nDIR determines which bus will receive data when the nOE is active Low. In the isolation mode (nOE = High), data from Bus A may be stored in the B register and/or data from Bus B may be stored in the A register. When an output function is disabled, the input function is still enabled and may be used to store and transmit data. Only one of the two buses,  A or B may be driven at a time.

Two options are available, 74ABT16646 which does not have the bus-hold feature and 74ABTH16646 which incorporates the bus-hold feature.




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