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CBT3384PW
10-bit bus switch with 5-bit output enables
General descriptionThe CBT3384 provides ten bits of high-speed TTL-compatible bus switching. The low resistance of the switch allows connections to be made with minimal propagation
delay.
The CBT3384 device is organized as two 5-bit bus switches with two separate output
enable (1OE, 2OE) inputs. When nOEis LOW, the switchison and portAis connectedto
the B port. When nOE is HIGH, each switch is disabled.
The CBT3384 is characterized for operation from −40°C to +85 °C.
Features5 Ω switch connection between two ports TTL-compatible control input levels Multiple package options See CBTD3384 for CBT3384 with level shifting diodes Latch-up protection exceeds 100 mA per JESD78 ESD protection: HBM JESD22-A114E exceeds 2000V CDM JESD22-C101C exceeds 1000V
Ordering information[1] Also known as QSOP24 package
CBT3384
10-bit bus switch with 5-bit output enables
Rev. 06 — 2 November 2009 Product data sheet
Table 1. Ordering informationCBT3384D −40 °C to +85°C SO24 plastic small outline package; 24 leads; body width 7.5 mm SOT137-1
CBT3384DB −40 °C to +85°C SSOP24 plastic shrink small outline package; 24 leads;
body width 5.3 mm
SOT340-1
CBT3384DK −40 °C to +85°C SSOP24[1] plastic shrink small outline package; 24 leads; body
width 3.9 mm; lead pitch 0.635 mm
SOT556-1
CBT3384PW −40 °C to +85°C TSSOP24 plastic thin shrink small outline package; 24 leads;
body width 4.4 mm
SOT355-1
NXP Semiconductors CBT3384
10-bit bus switch with 5-bit output enables Functional diagram Pinning information
5.1 Pinning
NXP Semiconductors CBT3384
10-bit bus switch with 5-bit output enables
5.2 Pin description Functional description[1]H= HIGH voltage level; L= LOW voltage level; Z = high-impedance OFF-state.
Table 2. Pin description1OE, 2OE 1, 13 output enable input (active LOW)
1A1 to 1A5 3, 4, 7, 8, 11 data input/output (A port)
2A1 to 2A5 14, 17, 18, 21, 22 data input/output (A port)
1B1 to 1B5 2, 5, 6, 9, 10 data input/output (B port)
2B1 to 2B5 15, 16, 19, 20, 23 data input/output (B port)
GND 12 ground (0V)
VCC 24 positive supply voltage
Table 3. Function selection[1] L 1An = 1Bn 2An = 2Bn H 1An = 1Bn Z L Z 2An = 2Bn
HHZ Z
NXP Semiconductors CBT3384
10-bit bus switch with 5-bit output enables Limiting values[1] Stresses beyond those listed may cause permanent damagetothe device. Theseare stress ratings only and functional operationofthe
device at these or any other conditions beyond those indicated under Section 8. is not implied. Exposure to absolute-maximum-rated
conditions for extended periods may affect device reliability.
[2] The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
Recommended operating conditions Static characteristics
Table 4. Limiting valuesIn accordance with the Absolute Maximum Rating System (IEC 60134).[1]
Tamb= −40 °C to +85 °C, unless otherwise specified.
VCC supply voltage −0.5 +7.0 V input voltage [2] −0.5 +7.0 V output current VO <0V - ±128 mA
IIK input clamping current VI/O =0V −50 - mA
Tstg storage temperature −65 +150 °C
Table 5. Operating conditionsAll unused control inputs of the device must be held at VCC or GND to ensure proper device operation.
VCC supply voltage 4.5 - 5.5 V
VIH HIGH-state input voltage 2.0 - - V
VIL LOW-state input voltage - - 0.8 V
Tamb ambient temperature operating in free air −40 - +85 °C
Table 6. Static characteristicsVoltages are referenced to GND (ground = 0 V).
VIK input clamping voltage VCC= 4.5 V; II= −18 mA - - −1.2 V input leakage current VCC= 5.5 V; VI= GND or 5.5V - - ±1 μA
ICC supply current VCC= 5.5 V; IO=0 mA; =VCCor GND 3 μA
ΔICC additional supply current per input pin; VCC= 5.5V; one inputat
3.4 V, other inputs at VCC or GND
[2] - - 2.5 mA
Vpass pass voltage output HIGH; VI =VCC= 5.0V;= −100μA
3.6 3.9 4.2 V input capacitance control pins; VI=3 V or 0V - 4.0 - pF
Cio(off) off-state input/output
capacitance
port off; VI=3 V or 0 V; nOE= VCC - 10.0 - pF
NXP Semiconductors CBT3384
10-bit bus switch with 5-bit output enables[1] All typical values are at VCC =5V, Tamb =25°C.
[2] This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
[3] Measured by the voltage drop between the nAn and the nBn terminals at the indicated current through the switch. ON resistance is
determined by the lowest voltage of the two (nAn or nBn) terminals.
10. Dynamic characteristics[1] The propagation delayisthe calculatedRC time constantofthe typicalON resistanceofthe switch andthe specified load capacitance,
when driven by an ideal voltage source (zero output impedance).
[2] tpd is the same as tPLH and tPHL.
RON ON resistance VCC= 4.5 V; VI =0V; II =64mA [3] -5 7 Ω
VCC= 4.5 V; VI =0V; II =30mA [3] -5 7 Ω
VCC= 4.5 V; VI= 2.4 V; II= −15 mA [3] -10 15 Ω
Table 6. Static characteristics …continuedVoltages are referenced to GND (ground = 0 V).
Table 7. Dynamic characteristicsVoltages are referenced to GND (ground=0 V). For test circuit see Figure7.
tpd propagation delay nAn, nBn to nBn, nAn;
see Figure5
[1][2]
VCC = 5.0V± 0.5V - - 0.25 - 0.25 ns
tPZH OFF-state to HIGH
propagation delay
nOE to nAn or nBn;
see Figure6
VCC = 5.0V± 0.5V 1.2 2.3 5.7 1.2 5.6 ns
tPZL OFF-state to LOW
propagation delay
nOE to nAn or nBn;
see Figure6
VCC = 5.0V± 0.5V 1.2 2.3 5.7 1.2 6.0 ns
tPHZ HIGH to OFF-state
propagation delay
nOE to nAn or nBn;
see Figure6
VCC = 5.0V± 0.5V 1.7 3.6 5.2 1.7 5.5 ns
tPLZ LOW to OFF-state
propagation delay
nOE to nAn or nBn;
see Figure6
VCC = 5.0V± 0.5V 1.7 2.7 5.2 1.7 6.6 ns
NXP Semiconductors CBT3384
10-bit bus switch with 5-bit output enables
11. Waveforms
Table 8. Measurement pointsVCC = 5.0V± 0.5V GND to 3.0 V 1.5 V 1.5 V VOL + 0.3 V VOH − 0.3 V
NXP Semiconductors CBT3384
10-bit bus switch with 5-bit output enables
12. Test information
Table 9. Test dataVCC = 5.0V± 0.5V GND to 3.0 V ≤ 2.5ns 50pF 500Ω open 7.0 V open
