74LCX16500MTD Fairchild Semiconductor, 74LCX16500MTD Datasheet - Page 2
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74LCX16500MTD
Manufacturer Part Number
74LCX16500MTD
Description
TXRX 18BIT UNIV BUS LV 56TSSOP
Manufacturer
Fairchild Semiconductor
Series
74LCXr
Datasheet
1.74LCX16500MTDX.pdf
(10 pages)
Specifications of 74LCX16500MTD
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
56-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
www.fairchildsemi.com
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