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參數資料
| 型號： | SN74AVCH374DWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發器 |
| 英文描述： | AVC SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | PLASTIC, SO-20 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 177K |
| 代理商： | SN74AVCH374DWR |
SN74AVCH374
OCTAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP
WITH 3-STATE OUTPUTS
SCES267D – APRIL 1999 – REVISED FEBRUARY 2000
3–77
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D DOC (Dynamic Output Control) Circuit
Dynamically Changes Output Impedance,
Resulting in Noise Reduction Without
Speed Degradation
D EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
D Dynamic Drive Capability Is Equivalent to
Standard Outputs With IOH and IOL of
±24 mA at 2.5-V VCC
D Over-Voltage-Tolerant Inputs/Outputs Allow
Mixed-Voltage-Mode Data Communications
D Ioff Supports Partial-Power-Down Mode
Operation
D Bus Hold on Data Inputs Eliminates the
Need for External Pullup / Pulldown
Resistors
D Package Options Include Plastic
Small-Outline (DW), Thin Very
Small-Outline (DGV), and Thin Shrink
Small-Outline (PW) Packages
description
A Dynamic Output Control (DOC) circuit is implemented, which, during the transition, initially lowers the output
impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1
shows typical VOL vs IOL and VOH vs IOH curves to illustrate the output impedance and drive capability of the
circuit. At the beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is
equivalent to a high-drive standard-output device. For more information, refer to the TI application reports, AVC
Logic Family Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC)
Circuitry Technology and Applications, literature number SCEA009.
136
–128
–144
–160
0.4
0.8
1.2
1.6
2.0
2.4
2.8
170
153
119
102
85
68
51
34
17
0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
TA = 25°C
Process = Nominal
IOL – Output Current – mA
VCC = 3.3 V
VCC = 2.5 V
VCC = 1.8 V
–
Output
V
oltage
–
V
OL
V
TA = 25°C
Process = Nominal
IOH – Output Current – mA
VCC = 3.3 V
VCC = 2.5 V
VCC = 1.8 V
–
Output
V
oltage
–
V
OH
V
–80
–96
–112
–32
–48
–64
0
–16
Figure 1. Output Voltage vs Output Current
This octal positive-edge-triggered D-type flip-flop is operational at 1.2-V to 3.6-V VCC, but is designed
specifically for 1.65-V to 3.6-V VCC operation.
The SN74AVCH374 is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers,
and working registers. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels
at the data (D) inputs.
A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high
or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive
the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines
without interface or pullup components.
PRODUCT
PREVIEW
Copyright
2000, Texas Instruments Incorporated
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
DOC and EPIC are trademarks of Texas Instruments Incorporated.
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| SN74AVCH374DW | AVC SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20 |
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| SN74AVCH4T245PWR | AVC SERIES, DUAL 2-BIT TRANSCEIVER, TRUE OUTPUT, PDSO16 |
| SN74AVCH8T245DGVR | AVC SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO24 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SN74AVCH4T245D | 功能描述:轉換 - 電壓電平 4-Bit Dual-Supply Bus Xcvr RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
| SN74AVCH4T245DE4 | 功能描述:轉換 - 電壓電平 4-Bit Dual-Supply Bus Xcvr RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
| SN74AVCH4T245DG4 | 功能描述:轉換 - 電壓電平 4B Dual Supply Bus Transceiver RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
| SN74AVCH4T245DGVR | 功能描述:轉換 - 電壓電平 Low Power Low IOVdd Dual Channel RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
| SN74AVCH4T245DR | 功能描述:轉換 - 電壓電平 4-Bit Dual-Supply Bus Xcvr RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MLF-8 |
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