SN74ALB16245
3.3-V ALB 16-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SCBS678C – SEPTEMBER 1996 – REVISED JANUARY 2001
D
D
D
D
D
D
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Member of Texas Instruments’ Widebus
Family
State-of-the-Art Advanced Low-Voltage
BiCMOS (ALB) Technology Design for 3.3-V
Operation
Schottky Diodes on All Inputs to Eliminate
Overshoot and Undershoot
Industry Standard ’16245 Pinout
Distributed VCC and GND Pins Minimize
High-Speed Switching Noise
Flow-Through Architecture Optimizes PCB
Layout
1DIR
1B1
1B2
GND
1B3
1B4
VCC
1B5
1B6
GND
1B7
1B8
2B1
2B2
GND
2B3
2B4
VCC
2B5
2B6
GND
2B7
2B8
2DIR
description
The SN74ALB16245 is a 16-bit transceiver
designed for high-speed, low-voltage (3.3-V) VCC
operation. This device is intended to replace the
conventional transceiver in any speed-critical
path. The small propagation delay is achieved
using a unity-gain amplifier on the input and
feedback resistors from input to output, which
allows the output to track the input with a small
offset voltage.
This device can be used as two 8-bit transceivers
or one 16-bit transceiver. It allows data
transmission from the A bus to the B bus or from
the B bus to the A bus, depending on the logic level
at the direction-control (DIR) input. The
output-enable (OE) input can be used to disable
the device so that the buses are effectively
isolated.
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
12
37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
1OE
1A1
1A2
GND
1A3
1A4
VCC
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
VCC
2A5
2A6
GND
2A7
2A8
2OE
ORDERING INFORMATION
TOP-SIDE
MARKING
Tube
SN74ALB16245DL
Tape and reel
SN74ALB16245DLR
TSSOP – DGG
Tape and reel
SN74ALB16245DGGR
TVSOP – DGV
Tape and reel
SN74ALB16245DGVR
SSOP – DL
40°C to 85°C
–40°C
ORDERABLE
PART NUMBER
PACKAGE†
TA
ALB16245
ALB16245
AV245
† 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.
Copyright 2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
SN74ALB16245
3.3-V ALB 16-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SCBS678C – SEPTEMBER 1996 – REVISED JANUARY 2001
FUNCTION TABLE
(each 8-bit section)
INPUTS
OE
DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
logic symbol†
48
1OE
1DIR
1
G3
3 EN1 [BA]
3 EN2 [AB]
25
2OE
2DIR
24
G6
6 EN4 [BA]
6 EN5 [AB]
1A1
47
2
1
1B1
2
1A2
1A3
1A4
1A5
1A6
1A7
1A8
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2A8
46
3
44
5
43
6
41
8
40
9
38
11
37
12
36
13
4
35
5
33
16
32
17
30
19
29
20
27
22
26
23
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
2
14
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• DALLAS, TEXAS 75265
1B2
1B3
1B4
1B5
1B6
1B7
1B8
2B1
2B2
2B3
2B4
2B5
2B6
2B7
2B8
SN74ALB16245
3.3-V ALB 16-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SCBS678C – SEPTEMBER 1996 – REVISED JANUARY 2001
logic diagram (positive logic)
1DIR
1
2DIR
48
1A1
25
1OE
47
2A1
2
24
2OE
36
13
1B1
To Seven Other Channels
2B1
To Seven Other Channels
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4.6 V
Input voltage range, VI: Except I/O ports (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4.6 V
I/O ports (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Output voltage range, VO (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through each VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA
Package thermal impedance, θJA (see Note 3): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
DL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 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.
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. This value is limited to 4.6 V maximum.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
MIN
MAX
3
3.6
V
High-level output current
–25
mA
Low-level output current
25
mA
5
ns/V
85
°C
VCC
IOH‡
Supply voltage
IOL‡
∆t/∆v
Input transition rise or fall rate
Outputs enabled
TA
Operating free-air temperature
‡ See Figures 1 and 2 for typical I/O ranges.
–40
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
UNIT
3
SN74ALB16245
3.3-V ALB 16-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SCBS678C – SEPTEMBER 1996 – REVISED JANUARY 2001
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
II
TEST CONDITIONS
A or B ports
VCC = 3 V
II = 18 mA
II = –18 mA
Control inputs
VCC = 3.6 V,
VI = VCC or GND
VI = VCC
A or B ports
VCC = 3
3.6
6V
VI = 0
MIN
3.7
–0.9
OE low
MAX
UNIT
VCC+1.2
–1.2
V
0.4
OE high
OE low
–0.7
OE high
IOZH
IOZL
VCC = 3.6 V,
VCC = 3.6 V,
VO = 3 V
VO = 0.5 V
ICC/buffer
ICCZ
VCC = 3.6 V,
VCC = 3.6 V,
IO = 0,
VI = VCC or GND
Control inputs = VCC or GND
∆ICC‡
VCC = 3 V to 3.6 V, One input at VCC – 0.6 V, Other inputs at VCC or GND
Ci
VI = 3 V or 0
VO = 3 V or 0
Cio
TYP†
±10
µA
0.6
mA
25
µA
–1
mA
–60
µA
0.7
20
µA
–0.2
–50
µA
3.7
5.6
mA
0.8
mA
600
µA
3.5
pF
7.5
pF
† All typical values are at VCC = 3.3 V, TA = 25°C.
‡ This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 3)
FROM
(INPUT)
TO
(OUTPUT)
tpd
A or B
B or A
0.6
1.3
ten
OE
A or B
1.5
tdis
OE
A or B
1.8
† All typical values are at VCC = 3.3 V, TA = 25°C.
4
VCC = 3.3 V ± 0.3 V
MIN TYP†
MAX
PARAMETER
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
UNIT
2
ns
3.2
6
ns
2.8
4.2
ns
SN74ALB16245
3.3-V ALB 16-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SCBS678C – SEPTEMBER 1996 – REVISED JANUARY 2001
OUTPUT VOLTAGE HIGH
vs
INPUT VOLTAGE
VOH – Output Voltage – V
3.5
3
2.5
–100 µA
–25 mA
–6 mA
2
1.5
1.5
2
2.5
3
3.5
4
VI – Input Voltage – V
Figure 1. VOH Over Recommended Free-Air Temperature Range
OUTPUT VOLTAGE LOW
vs
INPUT VOLTAGE
2
VOL – Output Voltage – V
1.5
25 mA
1
100 µA
0.5
6 mA
0
0
0.5
1
1.5
2
VI – Input Voltage – V
Figure 2. VOL Over Recommended Free-Air Temperature Range
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
SN74ALB16245
3.3-V ALB 16-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SCBS678C – SEPTEMBER 1996 – REVISED JANUARY 2001
PARAMETER MEASUREMENT INFORMATION
6V
500 Ω
From Output
Under Test
S1
Open
GND
CL = 50 pF
(see Note A)
500 Ω
TEST
S1
tpd
tPLZ/tPZL
tPHZ/tPZH
Open
6V
GND
LOAD CIRCUIT
tw
3V
3V
Timing
Input
0V
0V
VOLTAGE WAVEFORMS
PULSE DURATION
th
3V
Data
Input
1.5 V
1.5 V
0V
1.5 V
1.5 V
0V
tPZL
3V
1.5 V
3V
Output Control
(low-level
enabling)
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
1.5 V
0V
tPLH
Output
1.5 V
1.5 V
tsu
Input
1.5 V
Input
Output
Waveform 1
S1 at 6 V
(see Note B)
3V
1.5 V
VOL + 0.3 V
tPZH
tPHL
VOH
1.5 V
tPLZ
1.5 V
VOL
Output
Waveform 2
S1 at GND
(see Note B)
VOL
tPHZ
1.5 V
VOH
VOH – 0.3 V
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
VOLTAGE WAVEFORMS
PROPAGATION DELAY 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, tr ≤ 2.5 ns, tf ≤ 2.5 ns.
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.
Figure 3. Load Circuit and Voltage Waveforms
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
SN74ALB16245DGGR
ACTIVE
TSSOP
DGG
48
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ALB16245
SN74ALB16245DL
ACTIVE
SSOP
DL
48
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ALB16245
SN74ALB16245DLR
ACTIVE
SSOP
DL
48
1000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
ALB16245
(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)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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