74F646BSPC

Number of Channels per Chip : 8
Output Type : 3-State
Maximum Operating Temperature : + 70 C
Supply Voltage - Max : 5.5 V
Supply Voltage - Min : 4.5 V
Logic Type : Bipolar
Input Level : TTL
Output Level : TTL
High Level Output Current : - 15 mA
Package / Case : PDIP-24
Propagation Delay Time : 8 ns
Low Level Output Current : 64 mA
Packaging : Rail
Logic Family : 74F


Features:

Independent registers for A and B buses
Multiplexed real-time and stored data
F648 has inverting data paths
F646'F646B have non-inverting data paths
F646B is a faster version of the 'F646
TRI-STATE outputs
300 mil slim DIP
Guaranteed 4000V minimum ESD protection


Pinout




Specifications


StorageTemperature........................................... -65 to +150
AmbientTemperatureunderBias............................ -55to +125
JunctionTemperatureunderBias........................... -55 to +175
Plastic ..................................................................-55 to +150
V_CC Pin Potential to
GroundPin ..............................................................-05V to +7.0V
InputVoltage(Note2).............................................. -05V to +7.0V
InputCurrent(Note2).......................................... -30mA to +50mA
Voltage Applied to Output
in HIGH State (with V_CC 0V)
StandardOutput .......................................................-05V to +V_CC
TRI-STATEOutput..................................................... -05V to +55V
Current Applied to Output
inLOWState(Max) ......................................twicetheratedI_OL (mA)
ESDLastPassingVoltage(Min).............................................. 4000V


Description

The 74F646BSPC consist of bus transceiver circuits with TRI- STATE 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 to a high logic level Control G and direction pins are provid- ed to control the transceiver function In the transceiver mode data present at the high impedance port of the 74F646BSPC may be stored in either the A or the B register or in both The select controls can multiplex stored and real-time (transparent mode) data The direction control determines which bus will receive data when the enable control G is Active LOW In the isolation mode (control G HIGH) A data may be stored in the B register andor B data may be stored in the A regis- ter