- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄365646 > SN74ACT7804DL (Texas Instruments, Inc.) 512 】 18 STROBED FIRST-IN, FIRST-OUT MEMORY PDF資料下載
參數(shù)資料
| 型號(hào)： | SN74ACT7804DL |
| 廠(chǎng)商： | Texas Instruments, Inc. |
| 英文描述： | 512 】 18 STROBED FIRST-IN, FIRST-OUT MEMORY |
| 中文描述： | 512】18選通先入先出存儲(chǔ)器 |
| 文件頁(yè)數(shù)： | 3/11頁(yè) |
| 文件大?。?/td> | 146K |
| 代理商： | SN74ACT7804DL |
SN74ACT7804
512
×
18 STROBED FIRST-IN, FIRST-OUT MEMORY
SCAS204C – APRIL 1992 – REVISED APRIL 1998
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
functional block diagram
Q0–Q17
AF/AE
HF
OE
D0–D17
UNCK
LDCK
RESET
PEN
EMPTY
FULL
Status-
Flag
Logic
Read
Pointer
Reset
Logic
Location 1
Location 2
Location 511
Location 512
512
×
18 SRAM
Write
Pointer
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
AF/AE
24
O
Almost-full/almost-empty flag. Depth-offset values can be programmed for AF/AE, or the default value
of 64 can be used for both the almost-empty offset (X) and the almost-full offset (Y). AF/AE is high when
memory contains X or fewer words or (512 – Y) or more words. AF/AE is high after reset.
D0–D17
2–9, 11–12,
14–21
I
18-bit data input port
EMPTY
29
O
Empty flag. EMPTY is low when the FIFO is empty. A FIFO reset also causes EMPTY to go low.
FULL
28
O
Full flag. FULL is low when the FIFO is full. A FIFO reset causes FULL to go high.
HF
22
O
Half-full flag. HF is high when the FIFO memory contains 256 or more words. HF is low after reset.
LDCK
25
I
Load clock. Data is written to the FIFO on the rising edge of LDCK when FULL is high.
OE
56
I
Output enable. When OE is high, the data outputs are in the high-impedance state.
PEN
23
I
Program enable. After reset and before the first word is written to the FIFO, the binary value on D0–D7
is latched as an AF/AE offset value when PEN is low and LDCK is high.
Q0–Q17
33–34, 36–38,
40–43, 45–49,
51, 53–55
O
18-bit data output port
RESET
UNCK
1
I
Reset. A low level on RESET resets the FIFO and drives AF/AE and FULL high and HF and EMPTY low.
32
I
Unload clock. Data is read from the FIFO on the rising edge of UNCK when EMPTY is high.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN74ACT7805DL | 256 】 18 CLOCKED FIRST-IN, FIRST-OUT MEMORY |
| SN74ACT7806DL | 256 】 18 STROBED FIRST-IN, FIRST-OUT MEMORY |
| SN74ACT7807FN | 2048 】 9 CLOCKED FIRST-IN, FIRST-OUT MEMORY |
| SN74ACT7807PM | Low-Voltage CMOS Octal D-Type Flip-Flop Flow Through Pinout; Package: SOIC-20 WB; No of Pins: 20; Container: Tape and Reel; Qty per Container: 1000 |
| SN74ACT7807PAG | 2048 】 9 CLOCKED FIRST-IN, FIRST-OUT MEMORY |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74ACT7805-15DL | 功能描述:先進(jìn)先出 256 x 18 synchronous 先進(jìn)先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線(xiàn)寬度:18 bit 總線(xiàn)定向:Unidirectional 存儲(chǔ)容量:4 Mbit 定時(shí)類(lèi)型:Synchronous 組織:256 K x 18 最大時(shí)鐘頻率:100 MHz 訪(fǎng)問(wèn)時(shí)間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
| SN74ACT7805-15DLR | 功能描述:先進(jìn)先出 256 x 18 synchronous 先進(jìn)先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線(xiàn)寬度:18 bit 總線(xiàn)定向:Unidirectional 存儲(chǔ)容量:4 Mbit 定時(shí)類(lèi)型:Synchronous 組織:256 K x 18 最大時(shí)鐘頻率:100 MHz 訪(fǎng)問(wèn)時(shí)間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
| SN74ACT7805-20DL | 功能描述:先進(jìn)先出 256 x 18 synchronous 先進(jìn)先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線(xiàn)寬度:18 bit 總線(xiàn)定向:Unidirectional 存儲(chǔ)容量:4 Mbit 定時(shí)類(lèi)型:Synchronous 組織:256 K x 18 最大時(shí)鐘頻率:100 MHz 訪(fǎng)問(wèn)時(shí)間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
| SN74ACT7805-20DLR | 功能描述:先進(jìn)先出 256 x 18 synchronous 先進(jìn)先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線(xiàn)寬度:18 bit 總線(xiàn)定向:Unidirectional 存儲(chǔ)容量:4 Mbit 定時(shí)類(lèi)型:Synchronous 組織:256 K x 18 最大時(shí)鐘頻率:100 MHz 訪(fǎng)問(wèn)時(shí)間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
| SN74ACT7805-25DL | 功能描述:先進(jìn)先出 256 x 18 synchronous 先進(jìn)先出 memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線(xiàn)寬度:18 bit 總線(xiàn)定向:Unidirectional 存儲(chǔ)容量:4 Mbit 定時(shí)類(lèi)型:Synchronous 組織:256 K x 18 最大時(shí)鐘頻率:100 MHz 訪(fǎng)問(wèn)時(shí)間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。