SN74CBT3861
10-BIT FET BUS SWITCH
SCDS061D – APRIL 1998 – REVISED OCTOBER 2000
D
D
D
DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
5-Ω Switch Connection Between Two Ports
TTL-Compatible Input Levels
Latch-Up Performance Exceeds 250 mA Per
JESD 17
NC
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
GND
description
The SN74CBT3861 provides ten bits of
high-speed TTL-compatible bus switching. The
low on-state resistance of the switch allows
connections to be made with minimal propagation
delay.
The device is organized as one 10-bit switch with
a single output-enable (OE) input. When OE is
low, the switch is on, and port A is connected to
port B. When OE is high, the switch is open, and
the high-impedance state exists between the two
ports.
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
12
13
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
NC – No internal connection
ORDERING INFORMATION
TOP-SIDE
MARKING
Tube
SN74CBT3861DW
Tape and reel
SN74CBT3861DWR
SSOP (QSOP) – DBQ
Tape and reel
SN74CBT3861DBQR
CBT3861
TSSOP – PW
Tape and reel
SN74CBT3861PWR
CU861
TVSOP – DGV
Tape and reel
SN74CBT3861DGVR
SOIC – DW
–40°C to 85°C
ORDERABLE
PART NUMBER
PACKAGE†
TA
CBT3861
CU861
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
INPUT
OE
FUNCTION
L
A port = B port
H
Disconnect
logic diagram (positive logic)
2
22
A1
B1
11
A10
OE
13
B10
23
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.
Copyright 2000, 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
SN74CBT3861
10-BIT FET BUS SWITCH
SCDS061D – APRIL 1998 – REVISED OCTOBER 2000
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Continuous channel current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Input clamp current, IIK (VI/O < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
Package thermal impedance, θJA (see Note 2): DBQ package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61°C/W
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88°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. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
MIN
MAX
VCC
VIH
Supply voltage
4
5.5
High-level control input voltage
2
VIL
TA
Low-level control input voltage
Operating free-air temperature
–40
UNIT
V
V
0.8
V
85
°C
NOTE 3: 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.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
II
ICC
∆ICC§
Control inputs
Ci
Control inputs
Cio(OFF)
TEST CONDITIONS
VCC = 4.5 V,
VCC = 5.5 V,
II = –18 mA
VI = 5.5 V or GND
VCC = 5.5 V,
VCC = 5.5 V,
IO = 0,
One input at 3.4 V,
VI = 3 V or 0
VO = 3 V or 0,
VCC = 4 V,
TYP at VCC = 4 V
ron¶
VCC = 4.5 V
MIN
TYP‡
VI = VCC or GND
Other inputs at VCC or GND
OE = VCC
MAX
UNIT
–1.2
V
±1
µA
3
µA
2.5
mA
3
pF
5
pF
VI = 2.4 V,
II = 15 mA
14
22
VI = 0
II = 64 mA
II = 30 mA
5
7
5
7
Ω
VI = 2.4 V,
II = 15 mA
10
15
‡ All typical values are at VCC = 5 V (unless otherwise noted), 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.
¶ Measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by
the lowest voltage of the two (A or B) terminals.
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SN74CBT3861
10-BIT FET BUS SWITCH
SCDS061D – APRIL 1998 – REVISED OCTOBER 2000
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figure 1)
VCC = 4 V
VCC = 5 V
± 0.5 V
MIN
MIN
FROM
(INPUT)
TO
(OUTPUT)
tpd†
A or B
B or A
0.35
ten
OE
A or B
8.1
PARAMETER
MAX
UNIT
MAX
3.8
0.25
ns
7.5
ns
tdis
A or B
6.3
3.4
6.6
ns
OE
† The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance, when
driven by an ideal voltage source (zero output impedance).
PARAMETER MEASUREMENT INFORMATION
500 Ω
From Output
Under Test
S1
7V
Open
GND
CL = 50 pF
(see Note A)
500 Ω
TEST
S1
tpd
tPLZ/tPZL
tPHZ/tPZH
Open
7V
Open
3V
Output
Control
LOAD CIRCUIT
1.5 V
1.5 V
0V
tPLZ
tPZL
3V
Input
1.5 V
1.5 V
0V
tPLH
1.5 V
3.5 V
1.5 V
VOL + 0.3 V
VOL
tPHZ
tPZH
tPHL
VOH
Output
Output
Waveform 1
S1 at 7 V
(see Note B)
1.5 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
Output
Waveform 2
S1 at Open
(see Note B)
1.5 V
VOH
VOH – 0.3 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, 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 1. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
PACKAGE OPTION ADDENDUM
www.ti.com
14-Oct-2022
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)
Samples
(4/5)
(6)
SN74CBT3861DBQR
ACTIVE
SSOP
DBQ
24
2500
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
CBT3861
Samples
SN74CBT3861DW
ACTIVE
SOIC
DW
24
25
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
CBT3861
Samples
SN74CBT3861DWR
ACTIVE
SOIC
DW
24
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
CBT3861
Samples
SN74CBT3861PWR
ACTIVE
TSSOP
PW
24
2000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
CU861
Samples
(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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