参数资料
型号: SN74ABT646ADGVRE4
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: ABT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封装: GREEN, PLASTIC, TVSOP-24
文件页数: 20/23页
文件大小: 690K
代理商: SN74ABT646ADGVRE4
SN54ABT646A, SN74ABT646A
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3STATE OUTPUTS
SCBS069H JULY 1991 REVISED MAY 2004
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25°C
SN54ABT646A
SN74ABT646A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
VIK
VCC = 4.5 V,
II = 18 mA
1.2
V
VCC = 4.5 V,
IOH = 3 mA
2.5
VOH
VCC = 5 V,
IOH = 3 mA
3
V
VOH
VCC = 4.5 V
IOH = 24 mA
2
V
VCC = 4.5 V
IOH = 32 mA
2*
2
VOL
VCC = 4.5 V
IOL = 48 mA
0.55
V
VOL
VCC = 4.5 V
IOL = 64 mA
0.55*
0.55
V
Vhys
100
mV
II
Control inputs
VCC = 5.5 V, VI = VCC or GND
±1
A
II
A or B ports
VCC = 5.5 V, VI = VCC or GND
±100
A
IOZH
VCC = 5.5 V,
VO = 2.7 V
10§
A
IOZL
VCC = 5.5 V,
VO = 0.5 V
10§
A
Ioff
VCC = 0,
VI or VO ≤ 4.5 V
±100
A
ICEX
VCC = 5.5 V,
VO = 5.5 V
Outputs high
50
A
IO
VCC = 5.5 V,
VO = 2.5 V
50
100
180
50
180
50
180
mA
VCC = 5.5 V,
Outputs high
250
A
ICC
VCC = 5.5 V,
IO = 0,
V = V
or GND
Outputs low
30
mA
ICC
IO = 0,
VI = VCC or GND Outputs disabled
250
A
ICC#
VCC = 5.5 V, One input at 3.4 V,
Other inputs at VCC or GND
1.5
mA
Ci
Control inputs
VI = 2.5 V or 0.5 V
7
pF
Cio
A or B ports
VO = 2.5 V or 0.5 V
12
pF
* On products compliant to MIL-PRF-38535, this parameter does not apply.
All typical values are at VCC = 5 V.
The parameters IOZH and IOZL include the input leakage current.
§ This data-sheet limit may vary among suppliers.
Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
# This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 2)
SN54ABT646A
VCC = 5 V,
TA = 25°C
MIN
MAX
UNIT
MIN
MAX
MIN
MAX
fclock
Clock frequency
125
MHz
tw
Pulse duration, CLK high or low
4
ns
tsu
Setup time, A or B before CLKAB
↑ or CLKBA↑
3
3.5
ns
th
Hold time, A or B after CLKAB
↑ or CLKBA↑
1.5
ns
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