SCBS052B − JULY 1990 − REVISED MAY 1994
Copyright 1994, Texas Instruments Incorporated
3−3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
•State-of-the-Art BiCMOS Design
Significantly Reduces ICCZ
•High-Impedance State During Power-Up
and Power-Down
•3-State Outputs Drive Bus Lines or
Buffer-Memory Address Registers
•ESD Protection Exceeds 2000 V
Per MIL-STD-883C Method 3015
•Package Options Include Plastic
Small-Outline (D) Packages and Standard
Plastic 300-mil DIPs (N)
description
The SN64BCT125A bus buffer features independent line drivers with 3-state outputs. Each output is disabled
when the associated output-enable (OE) input is high.
The SN64BCT125A is characterized for operation from −40°C to 85°C and 0°C to 70°C.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
OE A
OUTPUT
Y
L H H
LLL
H X Z
logic symbol†logic diagram (positive logic)
1Y
3
EN
1
1OE 2
1A 4
5
2A 10
9
3A 13
12
4A
2Y
6
3Y
8
4Y
11
2OE
3OE
4OE
1
4
56
2A 2Y
2OE
1
23
1A 1Y
1OE
10
98
3A 3Y
3OE
13
12 11
4A 4Y
4OE
†This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
D OR N PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1OE
1A
1Y
2OE
2A
2Y
GND
VCC
4OE
4A
4Y
3OE
3A
3Y
!"#$ % &'!!($ #% )'*+&#$ ,#$(-
!,'&$% &!" $ %)(&&#$% )(! $.( $(!"% (/#% %$!'"($%
%$#,#!, 0#!!#$1- !,'&$ )!&(%%2 ,(% $ (&(%%#!+1 &+',(
$(%$2 #++ )#!#"($(!%-
SCBS052B − JULY 1990 − REVISED MAY 1994
3−4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the disabled or power-off state, VO− 0.5 V to 5.5 V. . . . . . . . . . . . . . .
Voltage range applied to any output in the high state, VO− 0.5 V to VCC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range − 40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range − 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.
NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
recommended operating conditions
MIN NOM MAX UNIT
VCC Supply voltage 4.5 5 5.5 V
VIH High-level input voltage 2 V
VIL Low-level input voltage 0.8 V
IIK Input clamp current −18 mA
IOH High-level output current −15 mA
IOL Low-level output current 64 mA
TAOperating free-air temperature −40 85 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP‡MAX UNIT
VIK VCC = 4.5 V, II = −18 mA −1.2 V
VOH
VCC = 4.5 V
IOH = −3 mA 2.4 3.3
V
VOH VCC = 4.5 V IOH = −15 mA 2 3.1 V
VOL VCC = 4.5 V, IOH = 64 mA 0.42 0.55 V
IOZH VCC = 5.5 V, VO = 2.7 V 50 µA
IOZL VCC = 5.5 V, VO = 0.5 V −50 µA
IOZ
VCC = 0 to 1.3 V (power up)
VO = 2.7 V or 0.5 V,
OE at 0.8 V
"50
A
IOZ VCC = 1.3 V to 0 (power down) VO = 2.7 V or 0.5 V,
OE at 0.8 V
"50 µA
IIVCC = 0, VI = 7 V 0.1 mA
IIH VCC = 5.5 V, VI = 2.7 V 25 µA
IIL VCC = 5.5 V, VI = 0.5 V −20 µA
IOS§VCC = 5.5 V, VO = 0 −100 −225 mA
ICCL VCC = 5.5 V 46 49 mA
ICCH VCC = 5.5 V 19 31 mA
ICCZ VCC = 5.5 V 6 14 mA
CiVCC = 5 V, VI = 2.5 V or 0.5 V 4 pF
CoVCC = 5 V, VO = 2.5 V or 0.5 V 9 pF
‡All typical values are at VCC = 5 V, TA = 25°C.
§Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
SCBS052B − JULY 1990 − REVISED MAY 1994
3−5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
switching characteristics (see Note 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω,
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500 Ω,
R2 = 500 Ω
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
R2 = 500
Ω
,
TA = 25°CTA = −40°C
to 85°CTA = 0°C
to 70°C
UNIT
MIN TYP MAX MIN MAX MIN MAX
tPLH
A
Y
1.6 3.5 5.2 1.6 6 1.6 5.7
ns
tPHL A Y 2.7 5 6.9 2.7 8 2.7 7.7 ns
tPZH
OE
Y
3.4 6.7 9 3.4 11.1 3.4 10.3
ns
tPZL
OE
Y5 8.2 10.4 5 12.8 5 11.7 ns
tPHZ
OE
Y
3 5.8 7.4 3 9.4 3 8.9
ns
tPLZ
OE
Y
2.8 5.5 7.3 2.8 9.9 2.8 8.6
ns
NOTE 2: Load circuits and voltage waveforms are shown in Section 1.
PACKAGE OPTION ADDENDUM
www.ti.com 28-Aug-2010
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
SN64BCT125AD ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Contact TI Distributor
or Sales Office
SN64BCT125ADE4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Contact TI Distributor
or Sales Office
SN64BCT125ADG4 ACTIVE SOIC D 14 50 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Contact TI Distributor
or Sales Office
SN64BCT125AN ACTIVE PDIP N 14 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type Purchase Samples
SN64BCT125ANE4 ACTIVE PDIP N 14 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type Purchase Samples
SN64BCT125ANSR ACTIVE SO NS 14 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Purchase Samples
SN64BCT125ANSRE4 ACTIVE SO NS 14 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Purchase Samples
SN64BCT125ANSRG4 ACTIVE SO NS 14 2000 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Purchase 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) 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.
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
PACKAGE OPTION ADDENDUM
www.ti.com 28-Aug-2010
Addendum-Page 2
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.
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.
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
SN64BCT125ANSR SO NS 14 2000 330.0 16.4 8.2 10.5 2.5 12.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
SN64BCT125ANSR SO NS 14 2000 367.0 367.0 38.0
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
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