Texas Instruments SN74AHCT1G126DBVR, SN74AHCT1G126DCKR Datasheet
SN74AHCT1G126
SINGLE BUS BUFFER GATE
WITH 3-STATE OUTPUT
SCLS380F – AUGUST 1997 – REVISED JANUARY 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
EPIC
(Enhanced-Performance Implanted
CMOS) Process
D
Inputs Are TTL-Voltage Compatible
D
Latch-Up Performance Exceeds 250 mA Per
JESD 17
D
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D
Package Options Include Plastic
Small-Outline Transistor (DBV, DCK)
Packages
description
The SN74AHCT1G126 is a single bus buffer gate/line driver with 3-state output. The output is disabled when
the output-enable (OE) input is low. When OE is high, true data is passed from the A input to the Y output.
To ensure the high-impedance state during power up or power down, OE should be tied to GND through a
pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the
driver.
The SN74AHCT1G126 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
OUTPUT
OE A
Y
H H H
H LL
L X Z
logic symbol
†
EN
1
OE
2
A
Y
4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
AY
OE
1
24
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.
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.
EPIC is a trademark of Texas Instruments Incorporated.
DBV OR DCK PACKAGE
(TOP VIEW)
1
2
3
5
4
OE
A
GND
V
CC
Y
SN74AHCT1G126
SINGLE BUS BUFFER GATE
WITH 3-STATE OUTPUT
SCLS380F – AUGUST 1997 – REVISED JANUARY 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
(see Note 1) –0.5 V to VCC + 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0) –20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0 or VO > VCC) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, I
O
(V
O
= 0 to VCC) ±25 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through VCC or GND ±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): DBV package 347°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DCK package 389°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 voltage ratings may be exceeded if the input and output 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 5.5 V
V
IH
High-level input voltage 2 V
V
IL
Low-level input voltage 0.8 V
V
I
Input voltage 0 5.5 V
V
O
Output voltage 0 V
CC
V
I
OH
High-level output current –8 mA
I
OL
Low-level output current 8 mA
Dt/D
v Input transition rise or fall rate 20 ns/V
T
A
Operating free-air temperature –40 85 °C
NOTE 3: All unused 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)
TA = 25°C
PARAMETER
TEST CONDITIONS
V
CC
MIN TYP MAX
MIN
MAX
UNIT
IOH = –50 mA
4.4 4.5 4.4
V
OH
IOH = –8 mA
4.5 V
3.94 3.8
V
IOL = 50 mA
0.1 0.1
V
OL
IOL = 8 mA
4.5 V
0.36 0.44
V
I
I
VI = VCC or GND 0 V to 5.5 V ±0.1 ±1
m
A
I
OZ
VO = VCC or GND 5.5 V ±0.25 ±2.5
m
A
I
CC
VI = VCC or GND, IO = 0 5.5 V 1 10
m
A
D
I
CC
‡
One input at 3.4 V , Other input at VCC or GND 5.5 V 1.35 1.5 mA
C
i
VI = VCC or GND 5 V 4 10 10 pF
C
o
VO = VCC or GND 5 V 10 pF
‡
This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or VCC.
Loading...