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參數(shù)資料
| 型號： | TMS279X |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FLOPPY DISK FORMATTERICONTROLLER FAMILY |
| 中文描述： | 軟盤驅(qū)動FORMATTERICONTROLLER家庭 |
| 文件頁數(shù)： | 33/40頁 |
| 文件大?。?/td> | 334K |
| 代理商： | TMS279X |
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TMS279X (WD279X) FLOPPY DISK FORMATTER / CONTROLLER FAMILY
33
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Voltage on any input (see Note 1) ..................................................................................... - 0.5 V to 7 V
Power dissipation (all outputs open) .......................................................................................... 0.75 W
Operating free-air temperature range ................................................................................... 0°C to 70°C
Storage temperature range .......................................................................................... - 55 °C to 125°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other conditions beyond those indicated in the "Recommended Operating Conditions"
section of this specification is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values in this data sheet are with respect to VSS
.
recommended operating conditions
PARAMETER
MIN
4.75
NOM
MAX
5.25
UNIT
V
Supply voltage, VCC
Supply voltage, VSS
High-level input voltage, VIH
Low-level input voltage, VIL
Operating free-air temperature, TA
5
0
2
V
V
°C
0.8
70
0
electrical characteristics over full ranges of recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VOH
High-level voltage output
PUMP
IOH = -1 mA
All others
IOH = -100 μA
VOL
Low-level output voltage
PUMP
IOL = 1 mA
All others
IOL = 1.6 mA
II
Input current (leakage)
VI = VCC
IO
Output current (leakage)
VO = VCC
IPU
Internal pull-up current
VI = 0 V
ICC
Supply current
All outputs open
MIN
2.2
2.4
TYP MAX
UNIT
V
0.2
0.45
10
10
1700
150
V
μA
μA
μA
mA
100
70
All typical values are at TA = 25°C and nominal supply voltages.
Internal pull-up resistors are on pins 1, 1 7, 19, 22, 36, 37, and 40. Also, pin 25 on 2791 and 2793 devices.
timing characteristics over recommended supply voltage range and operating free-air temperature range
READ ENABLE TIMING
PARAMETER
TEST
CONDITIONS
ALT.
SYMBOL
TSET
TSET
THLD
THLD
THE
TDRR
TIRR
TDACC
TDOH
MIN
TYP
MAX
UNIT
tsu(A-RE)
tsu(CS-RE)
th(A-RE)
th(CS-RE)
tw(RE)
trs(RE-DRQ)
trs(RE-INT)
ta(RE)
tdis(RE)
A0, A1 to RE# setup time
CS# to RE# setup time
A0, A1 from RE# hold time
CS# from RE# hold time
RE pulse duration
Reset time, DRQ from RE#
Reset time, INTRQ from RE#
Data access time from RE#
Data disable time from RE #
50
50
10
10
200
ns
ns
ns
ns
ns
ns
ns
ns
ns
CL = 50 pF
100
500
100
200
3000
200
150
CL = 50 pF
CL = 50 pF
20
Symbol used in Western Digital Corporation WD279X-02 Data Sheet
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| TMS279XN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:FLOPPY DISK FORMATTERICONTROLLER FAMILY |
| TMS27C/PC256-10 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TMS27C256 32768 BY 8-BIT UV ERASABLE TMS27PC256 32768 BY 8-BIT PROGRAMMABLE READ-ONLY MEMORIES |
| TMS27C/PC256-12 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TMS27C256 32768 BY 8-BIT UV ERASABLE TMS27PC256 32768 BY 8-BIT PROGRAMMABLE READ-ONLY MEMORIES |
| TMS27C/PC256-15 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TMS27C256 32768 BY 8-BIT UV ERASABLE TMS27PC256 32768 BY 8-BIT PROGRAMMABLE READ-ONLY MEMORIES |
| TMS27C/PC256-17 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TMS27C256 32768 BY 8-BIT UV ERASABLE TMS27PC256 32768 BY 8-BIT PROGRAMMABLE READ-ONLY MEMORIES |
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