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參數(shù)資料
| 型號(hào)： | 74F189PC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類(lèi)： | DRAM |
| 英文描述： | 64-Bit Random Access Memory with 3-STATE Outputs |
| 中文描述： | 16 X 4 STANDARD SRAM, 27 ns, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, MS-001, DIP-16 |
| 文件頁(yè)數(shù)： | 2/10頁(yè) |
| 文件大小： | 81K |
| 代理商： | 74F189PC |
Philips Semiconductors
Product specification
74F189A
64-bit TTL bipolar RAM, inverting (3-State)
2
1990 Feb 23
853–1309 98908
FEATURES
High speed performance
Replaces 74F189
Address access time: 8ns max vs 28ns for 74F189
Power dissipation: 4.3mW/bit
Schottky clamp TTL
One chip enable
Inverting outputs (for non-inverting outputs see 74F219A)
3-State outputs
74F189A in 150 mil wide SO is preferred options for new designs
DESCRIPTION
The 74F189A is a high speed, 64-bit RAM organized as a 16-word
by 4-bit array. Address inputs are buffered to minimize loading and
are fully decoded on chip. The outputs are in high impedance state
whenever the chip enable (CE) is high. The outputs are active only
in the READ mode (WE = high) and the output data is the
complement of the stored data.
TYPE
TYPICAL
ACCESS
TIME
TYPICAL
SUPPLY
CURRENT
( TOTAL)
74F189A
5.0ns
55mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%, T
amb
= 0
°
C to +70
°
C
DRAWING NUMBER
16-pin plastic Dual In-line Package
N74F189AN
SOT38-4
16-pin plastic Small Outline (150mil)
N74F189AD
SOT109-1
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
PINS
DESCRIPTION
74F (U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
D0 – D3
Data inputs
1.0/1.0
20
μ
A
/
0.6mA
20
μ
A
/
0.6mA
20
μ
A/1.2mA
20
μ
A/1.2mA
A0 – A3
Address inputs
1.0/1.0
CE
Chip enable input (active low)
1.0/2.0
WE
Write enable input (active low)
1.0/2.0
Q0 – Q3
Data outputs
150/40
3mA/24mA
NOTE:
One (1.0) FAST unit load is defined as: 20
μ
A in the high state and 0.6mA in the low state.
PIN CONFIGURATION
16
15
14
13
12
11
10
7
6
5
4
3
2
1
D0
D3
D2
Q2
Q3
A1
A2
A0
CE
Q1
WE
D1
GND
9
8
Q0
V
CC
A3
SF00299
LOGIC SYMBOL
D0
D2 D3
D1
Q0 Q1 Q2 Q3
5
7
9
11
6
10 12
V
= pin 16
GND = pin 8
4
A0
A1
A2
A3
CE
WE
1
15
14
13
2
3
SF00300
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F189SC | 64-Bit Random Access Memory with 3-STATE Outputs |
| 74F189SJ | 64-Bit Random Access Memory with 3-STATE Outputs |
| 74F190DC | Synchronous Up/Down Counter |
| 74F191SCX | Synchronous Up/Down Counter |
| 74F191SJX | Synchronous Up/Down Counter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F189SC | 功能描述:RAM其它 64-Bit Ran Acces Mem RoHS:否 制造商:Freescale Semiconductor 封裝:Tray |
| 74F189SCX | 功能描述:RAM其它 64-Bit Ran Acces Mem RoHS:否 制造商:Freescale Semiconductor 封裝:Tray |
| 74F189SJ | 功能描述:RAM其它 64-Bit Ran Acces Mem RoHS:否 制造商:Freescale Semiconductor 封裝:Tray |
| 74F189SJX | 功能描述:RAM其它 RoHS:否 制造商:Freescale Semiconductor 封裝:Tray |
| 74F190 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Up/Down Decade Counter with Preset and Ripple Clock |
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