AT16244
Fast Logic

16-Bit
Buffer/Line
Driver
AT16244F
AT16244G
Features
•
Fastest Propagation Speeds in the Industry T
PD (F grade)
= 2.5 ns, T
PD (G grade)
= 2.0 ns
•
Maximum derating for capacitive loads 1.5ns/100 pF (F grade) and 1.1 ns/100 pF
(G grade)
•
Very low ground bounce < 0.6V @ V
CC
=5.00 V, T
a
=25°C
•
Excellent noise rejection
•
Typical output skew ≤0.25ns
•
Bus Hold circuitry to retain last active state during Tri-State
•
Available in SSOP and TSSOP packages
Description
Atmel’s Fast Logic 16-Bit Buffer/Line driver provides bus interface and signal buffering
at the fastest speeds available in the industry. The Tri-state outputs can be set for
either 4-bit, 8-bit, or 16-bit independent operation. The AT16244 also has bus-hold
circuitry which retains the last state of the input whenever a high impedance level is
detected, and eliminates the need for pull-up or pull-down resistors. Minimal ground
bounce and high input noise rejection make this device excellent for use in all high
speed interface applications.
Note: 1. The function shown is repeated 3 additional times on each device.
Functional Block Diagram
(1)
1
1Y2
1Y3
VCC
2Y2
2Y3
3Y1
GND
3Y4
4Y1
GND
4Y4
OE 1
3
5
7
9
11
13
15
17
19
21
23
47
45
43
41
39
37
35
33
31
29
27
25
48
46
44
42
40
38
36
34
32
30
28
26
2
4
6
8
10
12
14
16
18
20
22
24
2
1A2
1A3
VCC
2A2
2A3
3A1
GND
3A4
4A1
GND
4A4
OE
1A1
GND
1A4
2A1
GND
2A4
3A2
3A3
VCC
4A2
4A3
3OE
1Y1
GND
1Y4
2Y1
GND
2Y4
3Y2
3Y3
VCC
4Y2
4Y3
4OE
Pin Names Descriptions
xOE
Output Enable Input
(Active Low)
xAχ Data Inputs
xYχ Tri-State Outputs
Pin Configurations
SSOP/TSSOP
Top View
0755B
AT16244
5-3