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Atmel Electronic Components Datasheet

AT16244F-25XC Datasheet

AT16244 Fast Logic 16-Bit Buffer/Line Driver

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AT16244F-25XC pdf
AT16244
Features
Fastest Propagation Speeds in the Industry TPD (F grade) = 2.5 ns, TPD (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 @ VCC=5.00 V, Ta=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.
Functional Block Diagram (1)
AT16244
Fast Logic
16-Bit
Buffer/Line
Driver
AT16244F
AT16244G
Note: 1. The function shown is repeated 3 additional times on each device.
Pin Configurations
Pin Names Descriptions
xOE
Output Enable Input
(Active Low)
xAχ Data Inputs
xYχ Tri-State Outputs
1OE 1Y1
1Y2 GND
1Y3 1Y4
VCC 2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
VCC
4Y1
GND
4Y4
4Y2
4Y3
4OE
SSOP/TSSOP
12
34
56
78
9 10
11 12
13
14
15
16
17
18
19
20
21
22
23
24
48 47
46 45
44 43
42 41
40 39
38 37
36
35
34
33
32
31
30
29
28
27
26
25
1A1 2OE
GND 1A2
1A4 1A3
2A1 VCC
GND 2A2
2A4 2A3
3A1
3A2
GND
3A3
3A4
VCC
4A1
4A2
GND
4A3
4A4
3OE
Top View
0755B
5-3



Atmel Electronic Components Datasheet

AT16244F-25XC Datasheet

AT16244 Fast Logic 16-Bit Buffer/Line Driver

No Preview Available !

AT16244F-25XC pdf
Function Table(1)
Inputs
xOE
L
L
H
Note: 1. X = Don’t Care, Z = High Impedance
xAχ
L
H
X
Outputs
xYχ
L
H
Z
Absolute Maximum Ratings*
Operating Temperature ........................ 0°C to +70°C
Storage Temperature ...................... -65°C to +150°C
Voltage on any Pin
with Respect to Ground...................-2.0V to +7.0V(1)
*NOTICE: Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent damage to
the device. This is a stress rating only and functional
operation of the device at these or any other conditions
beyond those indicated in the operational sections of
this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may
affect device reliability.
Maximum Operating Voltage.............................. 6.0V
5.0 Volt DC Characteristics
Notes: 1. Minimum voltage is -0.6V dc which may undershoot
to -2.0V for pulses of less than 20 ns. Maximum
output pin voltage is VCC +0.75V dc which may
overshoot to +7.0V for pulses of less than 20 ns.
Applicable over recommended operating range from Ta = 0°C to +70°C, VCC = +5.0V +/- 5% (unless otherwise noted)
Symbol
Parameter
Test Conditions
Min Typ Max Units
ICC Quiescent Power Supply
Current
VCC = Max, VIN = 3.4V
VIH Input High Voltage
2.0
VIL Input Low Voltage
IIH
Input High Current (I/O Pins)
VIN = VCC
IIL Input Low Current (I/O Pins) VIN = GND
IOZ Output Leakage Current
VOH(1)
Output High Voltage
F Grade only
VCC = 4.75V
IOH = -10 mA
2.7
VOH(2)
Output High Voltage
G Grade only
VCC = 4.75V
IOH = -12 mA
2.7
VOL
Output Low Voltage (F Grade)
IOL = 10 mA
VOL
Output Low Voltage (G Grade)
IOL = 12 mA
Note: 1. F grade: At VCC (max), the value of VOH(max) = 3.75V and at VCC(min), VOH(max) = 3.25V
2. G grade: At VCC (max), the value of VOH(max) = 3.75V and at VCC(min), VOH(max) = 3.35V
0.8 1.2 mA
V
0.8 V
±15 µA
±15 µA
±10 mA
V
V
0.55 V
0.55 V
5-4 AT16244



Atmel Electronic Components Datasheet

AT16244F-25XC Datasheet

AT16244 Fast Logic 16-Bit Buffer/Line Driver

No Preview Available !

AT16244F-25XC pdf
AT16244
AC Characteristics
AT16244F
Applicable over recommended operating range from Ta = 0°C to +70°C, VCC = 5.0V +/- 5% (unless otherwise noted)
Symbol
Parameter
Test Conditions Min Typ Max
Units
tPHL
Propagation Delay
CL = 50 pF
tPLH
2.5 ns
tPZH
Output Enable Time
CL = 50 pF
tPZL
5.5 ns
tPHZ
Output Disable Time
CL = 50 pF
tPLZ
6.0 ns
tSK(1)
Output Skew
CL = 50 pF
0.5 ns
tPHL(1)
tPLH
Propagation Delay vs Output Loading
1.3 1.5
ns/100 pF
Note: 1. This parameter is guaranteed but not 100% tested.
AT16244G
Applicable over recommended operating range from Ta = 0°C to +70°C, VCC = 5.0V +/- 5% (unless otherwise noted)
Symbol
Parameter
Test Conditions Min Typ Max
Units
tPHL Propagation Delay
tPLH
tPZH Output Enable Time
tPZL
tPHZ Output Disable Time
tPLZ
tSK(1)
Output Skew
tPHL(1)
tPLH
Propagation Delay vs Output Loading
Note: 1. This parameter is guaranteed but not 100% tested.
Test Circuits(1,2)
CL = 50 pF
CL = 50 pF
CL = 50 pF
CL = 50 pF
2.0
5.5
5.0
0.5
0.9 1.1
Switch Position
ns
ns
ns
ns
ns/100 pF
VCC
7.0V
Pulse
Generator
500
VIN VOUT
D.U.T.
50 pF
RT 500
CL
Test
Switch
Open Drain
Disable Low
Enable Low
Closed
All Other Tests
Open
Definitions:
CL= Load capacitance; Includes jig and probe capacitance.
RT=Termination resistance; Should be equal to ZOUT of the
Pulse Generator.
Note:
1. Pulse Generator: Rate 1.0 MHz, tF 2.5 ns, tR 2.5 ns.
2. AC tests are done with a single bit switching, and
timings need to be derated when multiple outputs are
switching in the same direction simultaneously. This derating
should not exceed 0.5 ns for 16 inputs switching
simultaneously.
5-5




Part Number AT16244F-25XC
Description AT16244 Fast Logic 16-Bit Buffer/Line Driver
Maker ATMEL Corporation
Total Page 6 Pages
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AT16244F-25XC pdf
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