SN74ALVCHR16269A
12-BIT TO 24-BIT REGISTERED BUS EXCHANGER
WITH 3-STATE OUTPUTS
www.ti.com
SCES050O – AUGUST 1995 – REVISED SEPTEMBER 2004
FEATURES
•
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Member of the Texas Instruments Widebus™
Family
Operates From 1.65 V to 3.6 V
Max tpd of 5.2 ns at 3.3 V
±24-mA Output Drive at 3.3 V
All Outputs Have Equivalent 26-Ω Series
Resistors, So No External Resistors Are
Required
Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
Latch-Up Performance Exceeds 250 mA Per
JESD 17
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
•
•
•
•
•
•
•
OEA
OEB1
2B3
GND
2B2
2B1
VCC
A1
A2
A3
GND
A4
A5
A6
A7
A8
A9
GND
A10
A11
A12
VCC
1B1
1B2
GND
1B3
NC
SEL
DESCRIPTION/ORDERING INFORMATION
This 12-bit to 24-bit registered bus exchanger is
designed for 1.65-V to 3.6-V VCC operation.
The SN74ALVCHR16269A is used in applications in
which two ports must be multiplexed onto, or
demultiplexed from, a single port. It is particularly
suitable as an interface between synchronous
DRAMs and high-speed microprocessors.
1
56
2
55
3
54
4
53
5
52
6
51
7
50
8
49
9
48
10
47
11
46
12
45
13
44
14
43
15
42
16
41
17
40
18
39
19
38
20
37
21
36
22
35
23
34
24
33
25
32
26
OEB2
CLKENA2
2B4
GND
2B5
2B6
VCC
2B7
2B8
2B9
GND
2B10
2B11
2B12
1B12
1B11
1B10
GND
1B9
1B8
1B7
VCC
1B6
1B5
GND
1B4
CLKENA1
CLK
31
Data is stored in the internal B-port registers on the
27
30
low-to-high transition of the clock (CLK) input, when
the appropriate clock-enable (CLKENA) inputs are
28
29
low. Proper control of these inputs allows two
sequential 12-bit words to be presented as a 24-bit
NC − No internal connection
word on the B port. For data transfer in the B-to-A
direction, a single storage register is provided. The select (SEL) line selects 1B or 2B data for the A outputs. The
register on the A output permits the fastest possible data transfer, thus extending the period during which the
data is valid on the bus. The control terminals are registered so that all transactions are synchronous with CLK.
Data flow is controlled by the active-low output enables (OEA, OEB1, and OEB2).
ORDERING INFORMATION
PACKAGE (1)
TA
(1)
TOP-SIDE MARKING
SN74ALVCHR16269AL
Tape and reel
SN74ALVCHR16269ALR
TSSOP – DGG
Tape and reel
SN74ALVCHR16269AGR
ALVCHR16269A
TVSOP – DGV
Tape and reel
SN74ALVCHR16269AVR
VR269A
SSOP – DL
-40°C to 85°C
ORDERABLE PART NUMBER
Tube
ALVCHR16269A
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Widebus is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1995–2004, Texas Instruments Incorporated
SN74ALVCHR16269A
12-BIT TO 24-BIT REGISTERED BUS EXCHANGER
WITH 3-STATE OUTPUTS
www.ti.com
SCES050O – AUGUST 1995 – REVISED SEPTEMBER 2004
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
To ensure the high-impedance state during power up or power down, a clock pulse should be applied as soon as
possible, and OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined
by the current-sinking capability of the driver. Due to OE being routed through a register, the active state of the
outputs cannot be determined prior to the arrival of the first clock pulse.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors
with the bus-hold circuitry is not recommended.
All outputs are designed to sink up to 12 mA and include equivalent 26-Ω resistors to reduce overshoot and
undershoot.
FUNCTION TABLES
OUTPUT ENABLE
INPUTS
OUTPUTS
CLK
OEA
OEB
A
↑
H
H
Z
1B, 2B
Z
↑
H
L
Z
Active
↑
L
H
Active
Z
↑
L
L
Active
Active
A-TO-B STORAGE (OEB = L)
INPUTS
(1)
OUTPUTS
CLKENA1
CLKENA2
CLK
A
1B
2B
L
H
↑
L
L
2B0 (1)
L
H
↑
H
H
2B0 (1)
L
L
↑
L
L
L
L
L
↑
H
H
H
H
L
↑
L
1B0 (1)
H
L
↑
H
1B0
(1)
H
H
X
X
1B0 (1)
L
H
2B0 (1)
Output level before the indicated steady-state input conditions were
established
B-TO-A STORAGE (OEA = L)
INPUTS
(1)
2
CLK
SEL
1B
2B
OUTPUT
A
X
H
X
X
A0 (1)
X
L
X
X
A0 (1)
↑
H
L
X
L
↑
H
H
X
H
↑
L
X
L
L
↑
L
X
H
H
Output level before the indicated steady-state input conditions were
established
SN74ALVCHR16269A
12-BIT TO 24-BIT REGISTERED BUS EXCHANGER
WITH 3-STATE OUTPUTS
www.ti.com
SCES050O – AUGUST 1995 – REVISED SEPTEMBER 2004
LOGIC DIAGRAM (POSITIVE LOGIC)
CLK
OEB1
29
C1
2
1D
C1
OEB2
CLKENA1
CLKENA2
56
1D
30
55
C1
SEL
OEA
28
1D
1
1D
1 of 12 Channels
C1
G1
A1
8
C1
1
1D
23
1B1
1
CE
C1
1D
6
2B1
CE
C1
1D
3
SN74ALVCHR16269A
12-BIT TO 24-BIT REGISTERED BUS EXCHANGER
WITH 3-STATE OUTPUTS
www.ti.com
SCES050O – AUGUST 1995 – REVISED SEPTEMBER 2004
ABSOLUTE MAXIMUM RATINGS (1)
over operating free-air temperature range (unless otherwise noted)
VCC
MIN
MAX
Supply voltage range
-0.5
4.6
Except I/O ports (2)
-0.5
4.6
I/O ports (2) (3)
-0.5
VCC + 0.5
UNIT
V
VI
Input voltage range
VO
Output voltage range (2) (3)
IIK
Input clamp current
VI < 0
-50
mA
IOK
Output clamp current
VO < 0
-50
mA
IO
Continuous output current
±50
mA
±100
mA
VCC + 0.5
Continuous current through each VCC or GND
θJA
Package thermal impedance (4)
Tstg
Storage temperature range
DGG package
64
DGV package
48
DL package
(1)
(2)
(3)
(4)
V
V
°C/W
56
-65
150
°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
This value is limited to 4.6 V, maximum.
The package thermal impedance is calculated in accordance with JESD 51-7.
RECOMMENDED OPERATING CONDITIONS (1)
VCC
Supply voltage
VCC = 1.65 V to 1.95 V
VIH
High-level input voltage
MIN
MAX
1.65
3.6
Low-level input voltage
V
0.65 × VCC
VCC = 2.3 V to 2.7 V
1.7
VCC = 2.7 V to 3.6 V
2
V
0.35 × VCC
VCC = 1.65 V to 1.95 V
VIL
UNIT
VCC = 2.3 V to 2.7 V
0.7
VCC = 2.7 V to 3.6 V
0.8
V
VI
Input voltage
0
VCC
V
VO
Output voltage
0
VCC
V
IOH
High-level output current
VCC = 1.65 V
-2
VCC = 2.3 V
-6
VCC = 2.7 V
-8
VCC = 3 V
IOL
Low-level output current
-12
VCC = 1.65 V
2
VCC = 2.3 V
6
VCC = 2.7 V
8
VCC = 3 V
∆t/∆v
Input transition rise or fall rate
TA
Operating free-air temperature
(1)
4
mA
mA
12
-40
10
ns/V
85
°C
All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
SN74ALVCHR16269A
12-BIT TO 24-BIT REGISTERED BUS EXCHANGER
WITH 3-STATE OUTPUTS
www.ti.com
SCES050O – AUGUST 1995 – REVISED SEPTEMBER 2004
ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
IOH = -100 µA
VOH
1.65 V to 3.6 V
1.2
IOH = -4 mA
2.3 V
1.9
2.3 V
1.7
3V
2.4
IOH = -8 mA
2.7 V
2
IOH = -12 mA
3V
2
IOL = 100 µA
1.65 V to 3.6 V
0.2
1.65 V
0.45
IOL = 4 mA
2.3 V
0.4
2.3 V
0.55
3V
0.55
IOL = 8 mA
2.7 V
0.6
IOL = 12 mA
3V
0.8
±5
3.6 V
VI = 0.58 V
1.65 V
VI = 1.07 V
VI = 0.7 V
2.3 V
VI = 1.7 V
VI = 0.8 V
3V
VI = 2 V
UNIT
V
IOL = 2 mA
VI = VCC or GND
II(hold)
MAX
VCC - 0.2
1.65 V
IOL = 6 mA
II
MIN TYP (1)
IOH = -2 mA
IOH = -6 mA
VOL
VCC
V
µA
25
-25
45
µA
-45
75
-75
VI = 0 to 3.6 V (2)
3.6 V
±500
IOZ (3)
VO = VCC or GND
3.6 V
±10
µA
ICC
VI = VCC or GND,
IO = 0
3.6 V
40
µA
One input at VCC - 0.6 V,
Other inputs at VCC or GND
750
µA
∆ICC
3 V to 3.6 V
Ci
Control inputs
VI = VCC or GND
3.3 V
5
pF
Cio
A or B ports
VO = VCC or GND
3.3 V
8.5
pF
(1)
(2)
(3)
All typical values are at VCC = 3.3 V, TA = 25°C.
This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to
another.
For I/O ports, the parameter IOZ includes the input leakage current.
5
SN74ALVCHR16269A
12-BIT TO 24-BIT REGISTERED BUS EXCHANGER
WITH 3-STATE OUTPUTS
www.ti.com
SCES050O – AUGUST 1995 – REVISED SEPTEMBER 2004
TIMING REQUIREMENTS
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
VCC = 1.8 V
MIN
Clock frequency
tw
Pulse duration, CLK high or low
Setup time
th
(1)
Hold time
MIN
MAX
(1)
fclock
tsu
MAX
VCC = 2.5 V
± 0.2 V
VCC = 2.7 V
MIN
MAX
95
VCC = 3.3 V
± 0.3 V
MIN
UNIT
MAX
115
135
(1)
5.2
4.3
A data before CLK↑
(1)
1.4
1.4
1
B data before CLK↑
(1)
1.6
1.5
1.1
SEL before CLK↑
(1)
0.8
1.1
1.3
CLKENA1 or CLKENA2 before CLK↑
(1)
0.8
1
0.8
OE before CLK↑
(1)
1.7
1.6
1.2
A data after CLK↑
(1)
0.9
0.9
1.2
B data after CLK↑
(1)
0.8
0.6
1
SEL after CLK↑
(1)
1.1
0.8
1.7
CLKENA1 or CLKENA2 after CLK↑
(1)
1.4
1
1.6
OE after CLK↑
(1)
0.9
0.8
1.2
3.3
MHz
ns
ns
ns
This information was not available at the time of publication.
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
VCC = 1.8 V
TO
(OUTPUT)
MIN
(1)
ten
CLK
tdis
CLK
MAX
B
(1)
2.3
7.7
6.9
2.2
5.8
A
(1)
1.9
6.4
5.8
2
5.2
B
(1)
2.5
7.7
6.9
2.3
5.8
A
(1)
2.2
6.7
6
2.1
5.3
B
(1)
3.3
8.1
6.7
2.4
6
A
(1)
2.7
8
6.2
2.1
6
95
MIN
MAX
115
MIN
UNIT
MIN
(1)
CLK
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
TYP
fmax
tpd
VCC = 2.5 V
± 0.2 V
MAX
135
MHz
ns
ns
ns
This information was not available at the time of publication.
OPERATING CHARACTERISTICS
TA = 25°C
TEST
CONDITIONS
PARAMETER
Cpd Power dissipation capacitance
(1)
6
Outputs enabled
Outputs disabled
CL = 0, f = 10 MHz
This information was not available at the time of publication.
VCC = 1.8 V
VCC = 2.5 V
VCC = 3.3 V
TYP
TYP
TYP
(1)
142
172
(1)
115
129
UNIT
pF
SN74ALVCHR16269A
12-BIT TO 24-BIT REGISTERED BUS EXCHANGER
WITH 3-STATE OUTPUTS
www.ti.com
SCES050O – AUGUST 1995 – REVISED SEPTEMBER 2004
PARAMETER MEASUREMENT INFORMATION
VLOAD
S1
RL
From Output
Under Test
Open
GND
CL
(see Note A)
RL
TEST
S1
tpd
tPLZ/tPZL
tPHZ/tPZH
Open
VLOAD
GND
LOAD CIRCUIT
INPUT
VCC
1.8 V ± 0.15 V
2.5 V ± 0.2 V
2.7 V
3.3 V ± 0.3 V
VI
tr/tf
VCC
VCC
2.7 V
2.7 V
≤2 ns
≤2 ns
≤2.5 ns
≤2.5 ns
VM
VLOAD
CL
RL
V∆
VCC/2
VCC/2
1.5 V
1.5 V
2 × VCC
2 × VCC
6V
6V
30 pF
30 pF
50 pF
50 pF
1 kΩ
500 Ω
500 Ω
500 Ω
0.15 V
0.15 V
0.3 V
0.3 V
tw
VI
Timing
Input
VM
VM
VM
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VM
VM
0V
tPLH
Output
Control
(low-level
enabling)
tPLZ
VLOAD/2
VM
tPZH
VOH
VM
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VM
0V
Output
Waveform 1
S1 at VLOAD
(see Note B)
tPHL
VM
VI
VM
tPZL
VI
Input
VOLTAGE WAVEFORMS
PULSE DURATION
th
VI
Data
Input
VM
0V
0V
tsu
Output
VI
VM
Input
Output
Waveform 2
S1 at GND
(see Note B)
VOL + V∆
VOL
tPHZ
VOH
VM
VOH − V∆
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω.
D. The outputs are measured one at a time, with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
H. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
7
PACKAGE OPTION ADDENDUM
www.ti.com
24-Aug-2014
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
74ALVCHR16269ALG4
ACTIVE
SSOP
DL
56
TBD
Call TI
Call TI
-40 to 85
SN74ALVCHR16269AL
OBSOLETE
SSOP
DL
56
TBD
Call TI
Call TI
-40 to 85
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
24-Aug-2014
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 2
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