Texas Instruments SN74CBTS3384DBLE, SN74CBTS3384DBQR, SN74CBTS3384DBR, SN74CBTS3384DW, SN74CBTS3384DWR Datasheet
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SN74CBTS3384
10-BIT FET BUS SWITCH
WITH SCHOTTKY DIODE CLAMPING
SCDS024H – MA Y 1995 – REVISED JULY 1999
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Functionally Equivalent to QS3384 and
QS3L384
D
5-Ω Switch Connection Between Two Ports
D
TTL-Compatible Input Levels
D
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB, DBQ), Thin Very Small-Outline (DGV),
and Thin Shrink Small-Outline (PW)
Packages
description
The SN74CBTS3384 provides ten bits of
high-speed TTL-compatible bus switching with
Schottky diodes on the I/Os to clamp undershoot.
The low on-state resistance of the switch allows
connections to be made with minimal propagation
delay .
The device is organized as two 5-bit bus switches with separate output-enable (OE
) inputs. 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 a high-impedance
state exists between the two ports.
The SN74CBTS3384 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 5-bit bus switch)
INPUTS
INPUTS/OUTPUTS
1OE 2OE 1B1–1B5 2B1–2B5
L L 1A1–1A5 2A1–2A5
L H 1A1–1A5 Z
H LZ2A1–2A5
H H Z Z
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.
Copyright 1999, Texas Instruments Incorporated
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.
DB, DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
1OE
1B1
1A1
1A2
1B2
1B3
1A3
1A4
1B4
1B5
1A5
GND
V
CC
2B5
2A5
2A4
2B4
2B3
2A3
2A2
2B2
2B1
2A1
2OE
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
SN74CBTS3384
10-BIT FET BUS SWITCH
WITH SCHOTTKY DIODE CLAMPING
SCDS024H – MA Y 1995 – REVISED JULY 1999
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
32
1A1
1B1
11
1A5
1
1OE
10
1B5
14 15
2A1
2B1
22
2A5
13
2OE
23
2B5
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, V
CC
–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous channel current 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I/O
< 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): DB package 104°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DBQ package 113°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGV package 139°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DW package 81°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package 120°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–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.
recommended operating conditions (see Note 3)
MIN MAX UNIT
V
CC
Supply voltage 4 5.5 V
V
IH
High-level control input voltage 2 V
V
IL
Low-level control input voltage 0.8 V
T
A
Operating free-air temperature –40 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.
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