74LCX16500GX Fairchild Semiconductor, 74LCX16500GX Datasheet - Page 2

• Manufacturer Part Number: 74LCX16500GX
• Description: TXRX 18BIT UNIV BUS LV 54FBGA
• Manufacturer: Fairchild Semiconductor
• Series: 74LCXr

Specifications of 74LCX16500GX

• Logic Type: Universal Bus Transceiver
• Number Of Circuits: 18-Bit
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 2 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 54-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Connection Diagrams
Pin Assignment for SSOP and TSSOP
Pin Assignment for FBGA
(Top Thru View)
2
Pin Descriptions
FBGA Pin Assignments
Truth Table
Note 4: A-to-B data flow is shown: B-to-A flow is similar but uses OEBA,
LEBA, and CLKBA.
Note 5: Output level before the indicated steady-state input conditions
were established.
Note 6: Output level before the indicated steady-state input conditions
were established, provided that CLKAB was LOW before LEAB went LOW.
Functional Description
parent mode when LEAB is HIGH. When LEAB is LOW,
the A data is latched if CLKAB is held at a HIGH or LOW
logic level. If LEAB is LOW, the A bus data is stored in the
latch/flip-flop on the HIGH-to-LOW transition of CLKAB.
Output-enable OEAB is active-HIGH. When OEAB is
HIGH, the outputs are active. When OEAB is LOW, the out-
puts are in the high impedance state.
Data flow for B to A is similar to that of A to B but uses
OEBA, LEBA, and CLKBA. The output enables are com-
plementary (OEAB is active HIGH and OEBA is active
LOW).
For A-to-B data flow, the LCX16500 operates in the trans-
A
B
CLKAB, CLKBA Clock Pulse Inputs
LEAB, LEBA
OEBA, OEBA
1
1
OEAB
Pin Names
- A
- B
G
A
B
C
D
E
F
H
J
H
H
H
H
H
H
L
18
18
A
A
A
A
A
A
A
A
A
1
10
12
14
16
17
2
4
6
8
LEAB
X
H
H
L
L
L
L
Data Register A Inputs/3-STATE Outputs
Data Register B Inputs/3-STATE Outputs
Latch Enable Inputs
Output Enable Inputs
Inputs
A
A
A
A
(Note 4)
A
A
A
A
A
2
13
15
18
11
1
3
5
7
9
CLKAB
OEAB
OEBA CLKBA
LEAB CLKAB
LEBA
GND
GND
GND
V
V
H
X
X
X
L
3
CC
CC
Description
GND
GND
GND
GND
GND
V
V
4
CC
CC
A
H
H
X
L
L
X
X
n
B
B
B
B
B
B
B
B
B
5
B
B
13
15
18
11
1
3
5
7
9
0
0
Output
(Note 5)
(Note 6)
B
Z
H
H
L
L
n
B
B
B
B
B
B
B
B
B
6
10
12
14
16
17
2
4
6
8