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參數(shù)資料
| 型號(hào)： | SN54BCT2240W |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | RTC W NVSRAM Control, Watchdog Timer, uP Reset, Interrupts and Battery Low Warning 28-DIP MODULE 0 to 70 |
| 中文描述： | 八路緩沖器和線路/馬鞍山驅(qū)動(dòng)器，三態(tài)輸出 |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大小： | 74K |
| 代理商： | SN54BCT2240W |
SN54BCT2240, SN74BCT2240
OCTAL BUFFERS AND LINE/MOS DRIVERS
WITH 3-STATE OUTPUTS
SCBS030D – SEPTEMBER 1988 – REVISED APRIL 1994
Copyright
1994, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
State-of-the-Art BiCMOS Design
Significantly Reduces I
CCZ
Output Ports Have Equivalent 33-
Series
Resistors, So No External Resistors Are
Required
3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
Package Options Include Plastic
Small-Outline (DW) and Shrink
Small-Outline (DB) Packages, Ceramic Chip
Carriers (FK) and Flatpacks (W), and
Standard Plastic and Ceramic 300-mil DIPs
(J, N)
description
These octal buffers and line drivers are designed
specifically to improve both the performance and
density of 3-state memory address drivers, clock
drivers,
and
bus-oriented
transmitters.
Taken
SN74BCT2241 and
′
BCT2244, these devices
provide the choice of selected combinations of
inverting and noninverting outputs, symmetrical
active-low output-enable (OE) inputs, and
complementary OE and OE inputs. These devices
feature high fan-out and improved fan-in.
receivers
and
the
together
with
The
′
BCT2240 is organized as two 4-bit line
drivers with separate output-enable (OE) inputs.
When OE is low, the device passes data from the
A inputs to the Y outputs. When OE is high, the
outputs are in the high-impedance state.
The outputs, which are designed to source or sink
up to 12 mA, include 33-
series resistors to
reduce overshoot and undershoot.
The SN54BCT2240 is characterized for operation
over the full military temperature range of –55
°
C
to 125
°
C. The SN74BCT2240 is characterized for
operation from 0
°
C to 70
°
C.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
Y
OE
L
A
H
L
L
L
H
H
X
Z
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
SN54BCT2240 . . . J OR W PACKAGE
SN74BCT2240 . . . DB, DW, OR N PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
SN54BCT2240 . . . FK PACKAGE
(TOP VIEW)
2
1
1
1
2
2
2
G
2
V
C
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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN54BCT2244FK | OCTAL BUFFERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS |
| SN54BCT2244J | RTC Module With 512Kx8 NVSRAM, Watchdog Timer, uP Reset, Interrupts and Battery Low Warning 36-DIP MODULE 0 to 70 |
| SN54BCT2244W | Replaced by BQ4802Y : SNAPHAT w/Integrated Battery & Crystal 4-PDIP |
| SN54BCT240FK | OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS |
| SN74BCT240DB | OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS |
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