MC74LCX16501 Datasheet, PDF (3/10 Pages) Motorola, Inc – LOW-VOLTAGE CMOS 18-BIT UNIVERSAL BUS TRANSCEIVER

MC74LCX16501
FUNCTION TABLE
Inputs
OEAB OEBA LEAB LEBA
CAB
CBA
Data
Ports
An
Bn
Operating Mode
L
H
Input Input
H or L H or L
X
X Hold Data; A and B Outputs Disabled
L
L
↑
↑
l
h
l
h
Clock A and/or B Data; A and B Outputs Disabled
H
H
Input Output
H or L
X*
X
QA Hold and Display B Data
L
X
↑
X*
l
h
L
H
Clock A Data to B Bus; Store A Data
H
X
X
X*
L
H
L
H
A Data to B Bus; (Transparent)
L
L
Output Input
X*
H or L QB
X Hold and Display A Data
X
L
X*
↑
L
H
l
h
Clock B Data to A Bus; Store B Data
X
H
X*
X
L
H
L
H
B Data to A Bus; (Transparent)
H
L
Output Output
L
L
H or L H or L QB
QA Stored A Data to B Bus; Stored B Data to A Bus
H = High Voltage Level; L = Low Voltage Level; h = High Voltage Level One Setup Time Prior to the Latch Enable or Clock Low–to–High Transition; l = Low Voltage
Level One Setup Time Prior to the Latch Enable or Clock Low–to–High Transition; X = Don’t Care; ↑ = Low–to–High Clock Transition; QA = A input storage register;
QB = B input storage register; * = The clocks are not internally gated with either the Output Enables or the Source Inputs. Therefore, data at the A or B ports may be
clocked into the storage registers, at any time. For ICC reasons, Do Not Float Inputs.
LCX DATA
3
BR1339 — REV 3
MOTOROLA