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TDA8034T Datasheet, PDF (18/29 Pages) NXP Semiconductors – Smart card interface
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NXP Semiconductors
TDA8034T; TDA8034AT
Smart card interface
Table 7. Characteristics of IC supply voltage …continued
VDDP = 5 V; VDD = 3.3 V; VDD(INTF) = 3.3 V; fxtal = 10 MHz; GND = 0 V; Tamb = 25 °C; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
fCMDVCCN frequency on pin
CMDVCCN
-
-
100
Hz
tw
pulse width
5 V card; Figure 10
3 V card; Figure 11,
Figure 12
30
-
-
-
-
ms
15
ms
Card detection input[6][7]
VIL
LOW-level input
voltage
−0.3
-
0.3VDD(INTF)
V
VIH
HIGH-level input
voltage
0.7VDD(INTF) -
VDD(INTF) + 0.3 V
Vhys
hysteresis voltage
pin PRESN
-
0.14VDD(INTF) -
V
IIL
LOW-level input current 0 V < VIL < VDD(INTF)
-
-
5
μA
IIH
HIGH-level input
0 V < VIH < VDD(INTF)
-
-
5
μA
current
OFFN output[8]
VOL
LOW-level output
IOL = 2 mA
voltage
0
-
0.3
V
VOH
HIGH-level output
IOH = −15 μA
voltage
0.75VDD(INTF) -
-
V
Rpu
pull-up resistance
connected to VDD(INTF)
16
20
24
kΩ
[1] To meet these specifications, VCC should be decoupled to pin GND using two ceramic multilayer capacitors of low ESR with values of
either 100 nF or one 220 nF and one 470 nF.
[2] Using decoupling capacitors of one 220 nF ± 20 % and one 470 nF ± 20 %.
[3] Using the integrated 9 kΩ pull-up resistor connected to VCC.
[4] Using the integrated 10 kΩ pull-up resistor connected to VDD(INTF).
[5] The transition time and the duty factor definitions are shown in Figure 13 on page 19; δ = t1 / (t1 + t2).
[6] Pins PRESN and CMDVCCN are active LOW; pin RSTIN is active HIGH; see Table 4 for states of pin CLKDIV1.
[7] Pin PRESN has an integrated current source of 1.25 μA to VDD(INTF).
[8] Pin OFFN is an NMOS drain, using an internal 20 kΩ pull-up resistor connected to VDD(INTF).
Table 8.
Symbol
IOlim
Protection characteristics
Parameter
output current limit
Isd
shutdown current
Tsd
shutdown temperature
Conditions
pin I/O
pin VCC
pin CLK
pin RST
pin VCC
at die
Min
Typ
Max
Unit
-15
-
+15
mA
135
175
225
mA
−70
-
+70
mA
−20
-
+20
mA
90
120
150
mA
-
150
-
°C
TDA8034T_TDA8034AT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2.0. — 12 November 2010
© NXP B.V. 2010. All rights reserved.
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