Transceiver. AT16245F Datasheet

AT16245F Datasheet PDF

Part AT16245F
Description AT16245 Fast Logic Bi-Directional Transceiver
Feature AT16245F; AT16245 Features • • • • • • • Fastest Propagation Speeds in the Industry TPD (F grade) = 2.5 ns, .
Manufacture ATMEL Corporation
Datasheet
Download AT16245F Datasheet




AT16245F
AT16245
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/100pF (F grade) and
1.1ns/100pF (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 new family of high speed CMOS transceivers offers the best of all worlds to the
user requiring stability and ultra fast speeds. These transceivers, which can function as
two 8-bit devices or one 16-bit device, are capable of improving processing efficiency as
much as 6% by reducing the number of wait states required during memory access. In
addition, this family of parts has been designed to minimize ground bounce on the outputs
while rejecting input spikes of up to 1.8V and 1 ns wide. This combination of ultra high
speed and low noise is the next step in high speed performance.
Functional Block Diagram
AT16245
Fast Logic
Bi-Directional
Transceiver
AT16245F
AT16245G
Pin Configurations
Pin Names
Descriptions
xOE Output Enable Input (Active Low)
xDIR
Direction Control Input
xAχ Side A Inputs or Tri-State Outputs
xBχ Side B Inputs or Tri-State Outputs
SSOP/TSSOP
1DIR 1B1
1B2 GND
1B3 1B4
VCC 1B5
1B6 GND
1B7 1B8
2B1
2B2
GND
2B3
2B4
VCC
2B5
2B6
GND
2B7
2B8
2DIR
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 1OE
GND 1A2
1A4 1A3
1A5 VCC
GND 1A6
1A7
1A8
2A1
2A2
GND
2A3
2A4
VCC
2A5
2A6
GND
2A7
2A8
2OE
Top View
0754B
5-9



AT16245F
Function Table
Inputs
xOE
L
L
H
Note: 1. X = Don’t Care
xDIR
L
H
X(1)
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
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................. -2.0 V 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
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.
5.0 Volt DC Characteristics
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
VIL Input Low Voltage
IIH Input High Current (I/O Pins)
VIN=VCC
IIL Input Low Current (I/O Pins)
VIN= GND
IOZ
VOH(1)
VOH(2)
Output Leakage Current
Output High Voltage
F Grade only
Output High Voltage
G Grade only
VCC=4.75 V
IOH=-10 mA
VCC=4.75 V
IOH=-12 mA
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
2.0 V
0.8 V
±15 µA
±15 µA
±10 µA
2.7 V
2.7 V
0.55 V
0.55 V
5-10 AT16245



AT16245F
AT16245
AC Characteristics
AT16245F
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
tPLH
Propagation Delay
tPZH
tPZL
Output Enable Time
tPHZ
tPLZ
tSK(1)
tPHL(1)
tPLH
Output Disable Time
Output Skew
Propagation Delay vs Output Loading
Note: 1. This parameter is guaranteed but not 100% tested.
CL=50 pF
CL=50 pF
CL=50 pF
CL=50 pF
2.5
6.0
6.0
0.5
1.3 1.5
ns
ns
ns
ns
ns/100pF
AT16245G
Applicable over recommended operating range from Ta=0°C to +70°C, VCC=5.0V ±5% (unless otherwise noted)
Symbol
Parameter
TPHL
TPLH
Propagation Delay
TPZH
TPZL
Output Enable Time
TPHZ
TPLZ
Output Disable Time
TSK(1)
Output Skew
tPHL(1)
tPLH
Propagation Delay vs Output Loading
Note: 1. This parameter is guaranteed but not 100% tested.
Test Conditions Min Typ Max
CL=50 pF
2.0
Units
ns
CL=50 pF
6.0 ns
CL=50 pF
CL=50 pF
5.0
0.5
0.9 1.1
ns
ns
ns/100pF
Test Circuits(1,2)
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.
Switch Position
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.
5-11







@ 2014 :: Datasheetspdf.com ::
Semiconductors datasheet search & download site (Privacy Policy & Contact)