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SN54ABT646 Datasheet(HTML) 6 Page - Texas Instruments

Part No. SN54ABT646
Description  OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
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Maker  TI [Texas Instruments]
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SN54ABT646 Datasheet(HTML) 6 Page - Texas Instruments

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SN54ABT646, SN74ABT646
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCBS068E – JULY 1991 – REVISED JULY 1994
2–6
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
SN54ABT646
SN74ABT646
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
MAX
MIN
MAX
UNIT
VIK
VCC = 4.5 V,
II = –18 mA
–1.2
–1.2
–1.2
V
VCC = 4.5 V,
IOH = – 3 mA
2.5
2.5
2.5
VOH
VCC = 5 V,
IOH = – 3 mA
3
3
3
V
VOH
VCC =4 5V
IOH = – 24 mA
2
2
V
VCC = 4.5 V
IOH = – 32 mA
2*
2
VOL
VCC =4 5V
IOL = 48 mA
0.55
0.55
V
VOL
VCC = 4.5 V
IOL = 64 mA
0.55*
0.55
V
II
VCC = 5.5 V,
Control inputs
±1
±1
±1
µA
II
CC
,
VI = VCC or GND
A or B ports
±100
±100
±100
µA
IOZH‡
VCC = 5.5 V,
VO = 2.7 V
10§
50
10§
µA
IOZL‡
VCC = 5.5 V,
VO = 0.5 V
–10§
–50
–10§
µA
Ioff
VCC = 0,
VI or VO ≤ 4.5 V
±100
±100
µA
ICEX
VCC = 5.5 V,
VO = 5.5 V
Outputs high
50
50
50
µA
IO¶
VCC = 5.5 V,
VO = 2.5 V
–50
–100
–180
–50
–180
–50
–180
mA
V5 5 V
I
0
Outputs high
250
250
250
µA
ICC
VCC = 5.5 V,
IO = 0,
VI =VCC or GND
Outputs low
30
30
30
mA
VI = VCC or GND
Outputs disabled
250
250
250
µA
∆ICC#
VCC = 5.5 V,
One input at 3.4 V,
Other inputs at VCC or GND
1.5
1.5
1.5
mA
Ci
VI = 2.5 V or 0.5 V
Control inputs
7
pF
Cio
VO = 2.5 V or 0.5 V
A or B ports
12
pF
* On products compliant to MIL-STD-883, Class B, 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)
VCC = 5 V,
TA = 25°C
SN54ABT646
SN74ABT646
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
fclock
Clock frequency
0
125
0
125
0
125
MHz
tw
Pulse duration, CLK high or low
4
4
4
ns
t
Setup time A or B before CLKAB
↑ or CLKBA↑
High
3.5
3.5
3.5
ns
tsu
Setup time, A or B before CLKAB
↑ or CLKBA↑
Low
3
3
3
ns
th
Hold time, A or B after CLKAB
↑ or CLKBA↑
0
0
0
ns
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.


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