SN54ABT651_07 Datasheet, PDF (7/15 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

SN54ABT651, SN74ABT651
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCBS083E – JANUARY 1991 – REVISED APRIL 1998
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25°C
SN54ABT651 SN74ABT651
MIN TYP† MAX MIN MAX MIN MAX
VIK
VOH
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5 V,
VCC = 4.5 V
VOL
VCC = 4.5 V
Vhys
II
IOZH‡
IOZL‡
Ioff
Control inputs
A or B ports
ICEX
IO§
ICC
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 0,
VCC = 5.5 V,
VO = 5.5 V
VCC = 5.5 V,
VCC = 5.5 V,
IO = 0,
VI = VCC or GND
II = –18 mA
IOH = –3 mA
IOH = –3 mA
IOH = –24 mA
IOH = –32 mA
IOL = 48 mA
IOL = 64 mA
VI = VCC or GND
VO = 2.7 V
VO = 0.5 V
VI or VO ≤ 4.5 V
Outputs high
VO = 2.5 V
Outputs high
Outputs low
Outputs disabled
–1.2
2.5
3
2
2*
0.55
0.55*
100
±1
±100
50
–50
±100
50
–50 –100 –180
250
30
250
–1.2
2.5
3
2
0.55
±1
±100
50
–50
50
–50 –180
250
30
250
–1.2
2.5
3
2
0.55
±1
±100
50
–50
±100
50
–50 –180
250
30
250
∆ICC¶
VCC = 5.5 V, One input at 3.4 V,
Other inputs at VCC or GND
1.5
1.5
1.5
Ci
Control inputs VI = 2.5 V or 0.5 V
6
Cio
A or B ports VO = 2.5 V or 0.5 V
7.5
* 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.}
§ _{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.}
UNIT
V
V
V
mV
µA
µA
µA
µA
µA
mA
µA
mA
µA
mA
pF
pF
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 2)
fclock
tw
tsu
th
Clock frequency
Pulse duration, CLK high or low
Setup time, A or B before CLKAB↑ or CLKBA↑
Hold time, A or B after CLKAB↑ or CLKBA↑
VCC = 5 V,
TA = 25°C
MIN MAX
SN54ABT651
MIN MAX
SN74ABT651
MIN MAX
125
125
125
4
4
4
3
3
3
0
0
0
UNIT
MHz
ns
ns
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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