SN54ABT2952A_07 Datasheet, PDF (5/19 Pages) Texas Instruments – OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

SN54ABT2952A, SN74ABT2952A
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCBS203D – AUGUST 1992 – REVISED JANUARY 1998
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25°C
SN54ABT2952A SN74ABT2952A
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 A or B ports
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
1 250
24
35
0.5 250
–1.2
2.5
3
2
0.55
±1
±100
10
–10
50
–50 –180
250
35
250
–1.2
2.5
3
2
0.55
±1
±100
50
–50
±100
50
–50 –180
250
35
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
3.5
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 1)
fclock
tw
tsu
th
Clock frequency
Pulse duration, CLK high or low
Setup time before CLK↑
Hold time after CLK↑
A or B
CLKEN
A or B
CLKEN
High or low
VCC = 5 V,
TA = 25°C
SN54ABT2952A SN74ABT2952A
MIN MAX
MIN MAX
MIN MAX
0 150
0 150
0 150
3.3
3.3
3.3
2.5
3
2.5
3
3
3
1.5
1.5
1.5
2
2
2
UNIT
MHz
ns
ns
ns
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