Product Summary

The SN74LS643N is an octal bus-line transceiver.

Parametrics

SN74LS643N Specification: (1)VOL Max. (Drvr)=0.5 @IOL (A)=24m; (2)t(PLH) Maximum (S)=15n; (3)Input Threshold Voltage (-)(V)=.60; (4)Input Threshold Voltage (+)(V)=2.0; (5)VOL Max. (Rcvr)=0.5; (6)VOH Min (Rcvr)=2.0; (7)Vsup(-) Nom.(V) Neg.Sup.Volt.=0.0; (8)Vsup(+) Nom.(V) Pos.Sup.Volt.=5.0; (9)Pins=20.

SN7400
SN7400
Other

Data Sheet
Negotiable 
SN7400D
SN7400D
Texas Instruments
Gates (AND / NAND / OR / NOR) Quad 2-input Positive-NAND gates
Data Sheet
0-1: $0.79
1-25: $0.71
25-100: $0.62
100-250: $0.55
SN7400DE4
SN7400DE4
Texas Instruments
Gates (AND / NAND / OR / NOR) Quad 2-input Positive-NAND gates
Data Sheet
0-1: $0.79
1-25: $0.64
25-100: $0.58
100-250: $0.51
SN7400DG4
SN7400DG4
Texas Instruments
Gates (AND / NAND / OR / NOR) Quad 2-input Pos- NAND
Data Sheet
0-1: $0.79
1-25: $0.71
25-100: $0.62
100-250: $0.55
SN7400DR
SN7400DR

IC QUAD 2IN POS-NAND GATE 14SOIC
Data Sheet
Negotiable 
SN7400DRE4
SN7400DRE4

IC QUAD 2IN POS-NAND GATE 14SOIC
Data Sheet
Negotiable