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參數資料
| 型號： | SN54ABT32374 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 32-Bit Registered Transceivers With 3-State Outputs(32位記錄收發(fā)器(三態(tài)輸出)) |
| 中文描述： | 32位注冊收發(fā)器與三態(tài)輸出（32位記錄收發(fā)器（三態(tài)輸出）） |
| 文件頁數： | 2/8頁 |
| 文件大?。?/td> | 130K |
| 代理商： | SN54ABT32374 |
SN54ABT32374, SN74ABT32374
32-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS463 – JUNE 1992–REVISED OCTOBER 1992
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
2
description
The ’ABT32374 is a 32-bit (quad 8-bit) transceiver with edge-triggered D-type flip-flops and 3-state outputs
designed specifically for driving highly capacitive or relatively low-impedance loads. It is particularly suitable for
implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
The ’ABT32374 can be used as four 8-bit flip-flops, two 16-bit flip-flops, or one 32-bit flip-flop. On the positive
transition of the clock (CLKAB or CLKBA) input, the B outputs of the flip-flop take on the logic levels set up at
the A inputs. The device allows data transmission from the A bus to the B bus or from the B bus to the A bus
depending upon the logic level at the output-enable inputs.
A buffered output-enable (OEAB or OEBA) input can be used to place the 32 outputs in either a normal logic
state (high or low) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive
the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus
lines without need for interface or pullup components.
The output enable (OEAB or OEBA) does not affect the internal operations of the flip-flop. Old data can be
retained or new data can be entered while the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver (A to B).
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 (B to A).
Active bus-hold circuitry is provided to hold unused or floating inputs at a valid logic level.
The SN54ABT32374 is characterized for operation over the full military temperature range of –55
°
C to 125
°
C.
The SN74ABT32374 is characterized for operation from –40
°
C to 85
°
C.
FUNCTION TABLE
(each flip-flop)
INPUTS
CLKAB
↑
↑
L
X
OUTPUT
OEAB
L
L
L
H
A-to-B data flow is shown. B-to-A data flow
is similar but uses OEBA and CLKBA.
A
H
L
X
X
B
H
L
Q0
Z
P
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相關代理商/技術參數 |
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| SN54ABT32501 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:36-BIT UNIVERSAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
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| SN54ABT3614 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:64 】 36 】 2 CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY WITH BUS MATCHING AND BYTE SWAPPING |
| SN54ABT3614HFP | 制造商:Texas Instruments 功能描述:FIFO SYNC DUAL BI-DIR 64 X 36 X 2 132CFPAK - Bulk |
| SN54ABT3614PCB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:64 】 36 】 2 CLOCKED BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY WITH BUS MATCHING AND BYTE SWAPPING |
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