SN74CB3T3245_08 Datasheet, PDF (5/17 Pages) Texas Instruments – 8-BIT FET BUS SWITCH 2.5-V/3.3-V LOW-VOLTAGE WITH 5-V-TOLERANT LEVEL SHIFTER

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SN74CB3T3245
8-BIT FET BUS SWITCH
2.5-V/3.3-V LOW-VOLTAGE WITH 5-V-TOLERANT LEVEL SHIFTER
SCDS136 – OCTOBER 2003 – REVISED MARCH 2005
Electrical Characteristics⁽¹⁾
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP⁽²⁾ MAX UNIT
V_IK
V_OH
I_IN
I_I
I_OZ ⁽³⁾
I_off
I_CC
∆I_CC ⁽⁴⁾
C_in
C_io(OFF)
C_io(ON)
r_on ⁽⁵⁾
Control inputs
Control inputs
Control inputs
V_CC = 3 V, I_I = –18 mA
See Figure 3 and Figure 4
V_CC = 3.6 V, V_IN = 3.6 V to 5.5 V or GND
V_I = V_CC – 0.7 V to 5.5 V
V_CC = 3.6 V, Switch ON, V_IN = V_CC or GND V_I = 0.7 V to V_CC – 0.7 V
V_I = 0 to 0.7 V
V_CC = 3.6 V, V_O = 0 to 5.5 V, V_I = 0, Switch OFF, V_IN = V_CC or GND
V_CC = 0, V_O = 0 to 5.5 V, V_I = 0,
V_CC = 3.6 V, I_I/O = 0,
Switch ON or OFF, V_IN = V_CC or GND
V_I = V_CC or GND
V_I = 5.5 V
V_CC = 3 V to 3.6 V, One input at V_CC – 0.6 V, Other inputs at V_CC or GND
V_CC = 3.3 V, V_IN = V_CC or GND
V_CC = 3.3 V, V_I/O = 5.5 V, 3.3 V, or GND, Switch OFF, V_IN = V_CC or GND
V_CC = 3.3 V, Switch ON, V_IN = V_CC or GND
V_I/O = 5.5 V or 3.3 V
V_I/O = GND
V_CC = 2.3 V, TYP at V_CC = 2.5 V, V_I = 0
I_O = 24 mA
I_O = 16 mA
V_CC = 3 V, V_I = 0
I_O = 64 mA
I_O = 32 mA
–1.2 V
±10 µA
±20
–40 µA
±5
±10 µA
10 µA
40
µA
40
300 µA
4
pF
5
pF
5
pF
13
5 8.5
5 8.5
Ω
5
7
5
7
(1) V_IN and I_IN refer to control inputs. V_I, V_O, I_I, and I_O refer to data pins.
(2) All typical values are at V_CC = 3.3 V (unless otherwise noted), T_A = 25°C.
(3) For I/O ports, the parameter I_OZ includes the input leakage current.
(4) This is the increase in supply current for each input that is at the specified TTL voltage level, rather than V_CC or GND.
(5) Measured by the voltage drop between A and B terminals at the indicated current through the switch. ON-state resistance is determined
by the lower of the voltages of the two (A or B) terminals.
Switching Characteristics
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 2)
PARAMETER
t_pd ⁽¹⁾
t_en
t_dis
FROM
(INPUT)
A or B
OE
OE
TO
(OUTPUT)
B or A
A or B
A or B
V_CC = 2.5 V
± 0.2 V
MIN MAX
0.15
1 10.5
1 5.5
V_CC = 3.3 V
± 0.3 V
MIN MAX
0.25
1
8
1 7.5
UNIT
ns
ns
ns
(1) The propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load
capacitance, when driven by an ideal voltage source (zero output impedance).
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