參數(shù)資料
型號(hào)： SN74ACT3641PQ
廠商： Texas Instruments, Inc.
英文描述： Low-Voltage Quad 2-Input OR Gate with 5V-Tolerant Inputs, Pb-free; Package: SOEIAJ-14; No of Pins: 14; Container: Tape and Reel; Qty per Container: 2000
中文描述： 1024】36時(shí)鐘先入先出存儲(chǔ)器
文件頁(yè)數(shù)： 25/26頁(yè)
文件大?。?/td> 379K
代理商： SN74ACT3641PQ
SN74ACT3641
1024
×
36
CLOCKED FIRST-IN, FIRST-OUT MEMORY
SCAS338C – JANUARY 1994 – REVISED OCTOBER 1997
25
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
I
C
SUPPLY CURRENT
vs
CLOCK FREQUENCY
fclock – Clock Frequency – MHz
150
100
50
0
0
10
20
30
40
50
200
250
60
70
fdata = 1/2 fclock
TA = 25
°
C
CL = 0 pF
VCC = 5.5 V
VCC = 5 V
VCC = 4.5 V
Figure 17
calculating power dissipation
The I
CC(f)
current in Figure 17 was taken while simultaneously reading and writing the FIFO on the
SN74ACT3641 with CLKA and CLKB set to f
clock
. All data inputs and data outputs change state during each
clock cycle to consume the highest supply current. Data outputs are disconnected to normalize the graph to a
zero-capacitance load. Once the capacitive load per data-output channel and the number of SN74ACT3641
inputs driven by TTL high levels are known, the power dissipation can be calculated with the equation below.
With I
CC(f)
taken from Figure 17, the maximum power dissipation (P
T
) of the SN74ACT3641 can be calculated
by:
P
T
= V
CC
×
[I
CC(f)
+ (N
×
I
CC
×
dc)] +
∑
(C
L
×
V
CC2
×
o
)
where:
N
I
CC
= increase in power-supply current for each input at a TTL high level
dc
= duty cycle of inputs at a TTL high level of 3.4 V
C
L
= output capacitive load
f
o
= switching frequency of an output
When no reads or writes are occurring on the SN74ACT3641, the power dissipated by a single clock (CLKA
or CLKB) input running at frequency f
clock
is calculated by:
P
T
= V
CC
×
f
clock
×
0.29 mA/MHz
= number of inputs driven by TTL levels
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SN74ACT3651PQ Low-Voltage CMOS Octal Transparent Latch; Package: TSSOP 20 LEAD; No of Pins: 20; Container: Tape and Reel; Qty per Container: 2500
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN74ACT3651-15PCB 功能描述:先進(jìn)先出 2048 x 36 synch 先進(jìn)先出 Memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲(chǔ)容量:4 Mbit 定時(shí)類型:Synchronous 組織:256 K x 18 最大時(shí)鐘頻率:100 MHz 訪問(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:
SN74ACT3651-15PQ 功能描述:先進(jìn)先出 2048 x 36 synch 先進(jìn)先出 Memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲(chǔ)容量:4 Mbit 定時(shí)類型:Synchronous 組織:256 K x 18 最大時(shí)鐘頻率:100 MHz 訪問(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:
SN74ACT3651-20PBC 制造商:Rochester Electronics LLC 功能描述:- Bulk
SN74ACT3651-20PCB 功能描述:先進(jìn)先出 2048 x 36 synch 先進(jìn)先出 Memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲(chǔ)容量:4 Mbit 定時(shí)類型:Synchronous 組織:256 K x 18 最大時(shí)鐘頻率:100 MHz 訪問(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:
SN74ACT3651-20PQ 功能描述:先進(jìn)先出 2048 x 36 synch 先進(jìn)先出 Memory RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲(chǔ)容量:4 Mbit 定時(shí)類型:Synchronous 組織:256 K x 18 最大時(shí)鐘頻率:100 MHz 訪問(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:
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